51202155 has 16 divisors (see below), whose sum is σ = 82241280. Its totient is φ = 27201888.

The previous prime is 51202097. The next prime is 51202159. The reversal of 51202155 is 55120215.

It is not a de Polignac number, because 51202155 - 2⁶ = 51202091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51202159) 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, 2545 + ... + 10434.

It is an arithmetic number, because the mean of its divisors is an integer number (5140080).

Almost surely, 2^51202155 is an apocalyptic number.

51202155 is a deficient number, since it is larger than the sum of its proper divisors (31039125).

51202155 is a wasteful number, since it uses less digits than its factorization.

51202155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13250.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 51202155 is about 7155.5681116177. The cubic root of 51202155 is about 371.3323163159.

The spelling of 51202155 in words is "fifty-one million, two hundred two thousand, one hundred fifty-five".