61545353 has 4 divisors (see below), whose sum is σ = 61814340. Its totient is φ = 61276368.

The previous prime is 61545347. The next prime is 61545359. The reversal of 61545353 is 35354516.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (61545347) and next prime (61545359).

It can be written as a sum of positive squares in 2 ways, for example, as 23931664 + 37613689 = 4892^2 + 6133^2 .

It is a cyclic number.

It is not a de Polignac number, because 61545353 - 2¹² = 61541257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61545359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134150 + ... + 134607.

It is an arithmetic number, because the mean of its divisors is an integer number (15453585).

Almost surely, 2^61545353 is an apocalyptic number.

It is an amenable number.

61545353 is a deficient number, since it is larger than the sum of its proper divisors (268987).

61545353 is a wasteful number, since it uses less digits than its factorization.

61545353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268986.

The product of its digits is 27000, while the sum is 32.

The square root of 61545353 is about 7845.0846394414. The cubic root of 61545353 is about 394.8193437621.

Adding to 61545353 its reverse (35354516), we get a palindrome (96899869).

The spelling of 61545353 in words is "sixty-one million, five hundred forty-five thousand, three hundred fifty-three".