102190057 has 4 divisors (see below), whose sum is σ = 102213520. Its totient is φ = 102166596.

The previous prime is 102190051. The next prime is 102190069. The reversal of 102190057 is 750091201.

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, and also an emirpimes, since its reverse is a distinct semiprime: 750091201 = 619 ⋅1211779.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102190057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102190051) 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, 3063 + ... + 14620.

It is an arithmetic number, because the mean of its divisors is an integer number (25553380).

Almost surely, 2^102190057 is an apocalyptic number.

It is an amenable number.

102190057 is a deficient number, since it is larger than the sum of its proper divisors (23463).

102190057 is an equidigital number, since it uses as much as digits as its factorization.

102190057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23462.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 102190057 is about 10108.9097829588. The cubic root of 102190057 is about 467.5228917270.

The spelling of 102190057 in words is "one hundred two million, one hundred ninety thousand, fifty-seven".