102257245 has 8 divisors (see below), whose sum is σ = 124187616. Its totient is φ = 80819856.

The previous prime is 102257231. The next prime is 102257249. The reversal of 102257245 is 542752201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102257245 - 2⁹ = 102256733 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 (102257249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122787 + ... + 123616.

It is an arithmetic number, because the mean of its divisors is an integer number (15523452).

Almost surely, 2^102257245 is an apocalyptic number.

It is an amenable number.

102257245 is a deficient number, since it is larger than the sum of its proper divisors (21930371).

102257245 is an equidigital number, since it uses as much as digits as its factorization.

102257245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246491.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 102257245 is about 10112.2324439265. The cubic root of 102257245 is about 467.6253317205.

The spelling of 102257245 in words is "one hundred two million, two hundred fifty-seven thousand, two hundred forty-five".