102151461 has 4 divisors (see below), whose sum is σ = 136201952. Its totient is φ = 68100972.

The previous prime is 102151457. The next prime is 102151471. The reversal of 102151461 is 164151201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 102151461 - 2² = 102151457 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102151411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17025241 + ... + 17025246.

It is an arithmetic number, because the mean of its divisors is an integer number (34050488).

Almost surely, 2^102151461 is an apocalyptic number.

It is an amenable number.

102151461 is a deficient number, since it is larger than the sum of its proper divisors (34050491).

102151461 is an equidigital number, since it uses as much as digits as its factorization.

102151461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34050490.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 102151461 is about 10107.0005936479. Note that the first 3 decimals coincide. The cubic root of 102151461 is about 467.4640249896.

The spelling of 102151461 in words is "one hundred two million, one hundred fifty-one thousand, four hundred sixty-one".