102257250 has 32 divisors (see below), whose sum is σ = 255235968. Its totient is φ = 27268400.

The previous prime is 102257249. The next prime is 102257257. The reversal of 102257250 is 52752201.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 102257250.

It is not an unprimeable number, because it can be changed into a prime (102257257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67422 + ... + 68921.

It is an arithmetic number, because the mean of its divisors is an integer number (7976124).

Almost surely, 2^102257250 is an apocalyptic number.

102257250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102257250 is an abundant number, since it is smaller than the sum of its proper divisors (152978718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102257250 is a wasteful number, since it uses less digits than its factorization.

102257250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136363 (or 136353 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 102257250 is about 10112.2326911518. The cubic root of 102257250 is about 467.6253393422.

The spelling of 102257250 in words is "one hundred two million, two hundred fifty-seven thousand, two hundred fifty".