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61402113 = 3217401321
BaseRepresentation
bin1110101000111…
…0110000000001
311021112112212100
43222032300001
5111204331423
610032021013
71343623623
oct352166001
9137475770
1061402113
1131729353
1218691769
13c94b216
148224c13
1555cd343
hex3a8ec01

61402113 has 12 divisors (see below), whose sum is σ = 93909348. Its totient is φ = 38526720.

The previous prime is 61402093. The next prime is 61402123. The reversal of 61402113 is 31120416.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 23357889 + 38044224 = 4833^2 + 6168^2 .

It is not a de Polignac number, because 61402113 - 26 = 61402049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61402123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200508 + ... + 200813.

It is an arithmetic number, because the mean of its divisors is an integer number (7825779).

Almost surely, 261402113 is an apocalyptic number.

It is an amenable number.

61402113 is a deficient number, since it is larger than the sum of its proper divisors (32507235).

61402113 is a wasteful number, since it uses less digits than its factorization.

61402113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401344 (or 401341 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 61402113 is about 7835.9500381256. The cubic root of 61402113 is about 394.5128063811.

Adding to 61402113 its reverse (31120416), we get a palindrome (92522529).

The spelling of 61402113 in words is "sixty-one million, four hundred two thousand, one hundred thirteen".

Divisors: 1 3 9 17 51 153 401321 1203963 3611889 6822457 20467371 61402113