51190155 has 24 divisors (see below), whose sum is σ = 89950848. Its totient is φ = 26925696.

The previous prime is 51190141. The next prime is 51190177. The reversal of 51190155 is 55109115.

It is not a de Polignac number, because 51190155 - 2¹¹ = 51188107 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4507 + ... + 11076.

It is an arithmetic number, because the mean of its divisors is an integer number (3747952).

Almost surely, 2^51190155 is an apocalyptic number.

51190155 is a deficient number, since it is larger than the sum of its proper divisors (38760693).

51190155 is a wasteful number, since it uses less digits than its factorization.

51190155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15667 (or 15664 counting only the distinct ones).

The product of its (nonzero) digits is 1125, while the sum is 27.

The square root of 51190155 is about 7154.7295546373. The cubic root of 51190155 is about 371.3033049331.

The spelling of 51190155 in words is "fifty-one million, one hundred ninety thousand, one hundred fifty-five".