102550401 has 32 divisors (see below), whose sum is σ = 156280320. Its totient is φ = 66437712.

The previous prime is 102550397. The next prime is 102550417. The reversal of 102550401 is 104055201.

102550401 is a `hidden beast` number, since 10 + 255 + 0 + 401 = 666.

It is not a de Polignac number, because 102550401 - 2² = 102550397 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102557401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149806 + ... + 150488.

It is an arithmetic number, because the mean of its divisors is an integer number (4883760).

Almost surely, 2^102550401 is an apocalyptic number.

It is an amenable number.

102550401 is a deficient number, since it is larger than the sum of its proper divisors (53729919).

102550401 is an equidigital number, since it uses as much as digits as its factorization.

102550401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842 (or 836 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 102550401 is about 10126.7171877169. The cubic root of 102550401 is about 468.0717756450.

It can be divided in two parts, 10 and 2550401, that added together give a triangular number (2550411 = T₂₂₅₈).

The spelling of 102550401 in words is "one hundred two million, five hundred fifty thousand, four hundred one".