122556051 has 16 divisors (see below), whose sum is σ = 187422720. Its totient is φ = 79067880.

The previous prime is 122556019. The next prime is 122556053. The reversal of 122556051 is 150655221.

122556051 is a `hidden beast` number, since 1 + 2 + 2 + 55 + 605 + 1 = 666.

It is not a de Polignac number, because 122556051 - 2⁵ = 122556019 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (122556053) 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, 72375 + ... + 74048.

It is an arithmetic number, because the mean of its divisors is an integer number (11713920).

Almost surely, 2^122556051 is an apocalyptic number.

122556051 is a deficient number, since it is larger than the sum of its proper divisors (64866669).

122556051 is a wasteful number, since it uses less digits than its factorization.

122556051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146463 (or 146457 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 122556051 is about 11070.5036470795. The cubic root of 122556051 is about 496.7199306769.

The spelling of 122556051 in words is "one hundred twenty-two million, five hundred fifty-six thousand, fifty-one".