102856497 has 4 divisors (see below), whose sum is σ = 137142000. Its totient is φ = 68570996.

The previous prime is 102856487. The next prime is 102856513. The reversal of 102856497 is 794658201.

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 a cyclic number.

It is not a de Polignac number, because 102856497 - 2¹⁵ = 102823729 is a prime.

It is a super-2 number, since 2×102856497² = 21158917950222018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102856447) 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, 17142747 + ... + 17142752.

It is an arithmetic number, because the mean of its divisors is an integer number (34285500).

Almost surely, 2^102856497 is an apocalyptic number.

It is an amenable number.

102856497 is a deficient number, since it is larger than the sum of its proper divisors (34285503).

102856497 is an equidigital number, since it uses as much as digits as its factorization.

102856497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34285502.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 102856497 is about 10141.8192155057. The cubic root of 102856497 is about 468.5370186933.

The spelling of 102856497 in words is "one hundred two million, eight hundred fifty-six thousand, four hundred ninety-seven".