121162551 has 32 divisors (see below), whose sum is σ = 175979520. Its totient is φ = 73920000.

The previous prime is 121162549. The next prime is 121162567. The reversal of 121162551 is 155261121.

It is not a de Polignac number, because 121162551 - 2¹ = 121162549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121162501) 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, 301951 + ... + 302351.

It is an arithmetic number, because the mean of its divisors is an integer number (5499360).

Almost surely, 2^121162551 is an apocalyptic number.

121162551 is a deficient number, since it is larger than the sum of its proper divisors (54816969).

121162551 is a wasteful number, since it uses less digits than its factorization.

121162551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607.

The product of its digits is 600, while the sum is 24.

The square root of 121162551 is about 11007.3862020009. The cubic root of 121162551 is about 494.8301304687.

The spelling of 121162551 in words is "one hundred twenty-one million, one hundred sixty-two thousand, five hundred fifty-one".