102057550 has 96 divisors (see below), whose sum is σ = 232128000. Its totient is φ = 32607360.

The previous prime is 102057523. The next prime is 102057617. The reversal of 102057550 is 55750201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 684876 + ... + 685024.

It is an arithmetic number, because the mean of its divisors is an integer number (2418000).

Almost surely, 2^102057550 is an apocalyptic number.

102057550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102057550 is an abundant number, since it is smaller than the sum of its proper divisors (130070450).

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

102057550 is a wasteful number, since it uses less digits than its factorization.

102057550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 102057550 is about 10102.3536861466. The cubic root of 102057550 is about 467.3207296862.

The spelling of 102057550 in words is "one hundred two million, fifty-seven thousand, five hundred fifty".