51011055 has 12 divisors (see below), whose sum is σ = 88419240. Its totient is φ = 27205872.

The previous prime is 51011047. The next prime is 51011057. The reversal of 51011055 is 55011015.

It is not a de Polignac number, because 51011055 - 2³ = 51011047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51011057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 566745 + ... + 566834.

It is an arithmetic number, because the mean of its divisors is an integer number (7368270).

Almost surely, 2^51011055 is an apocalyptic number.

51011055 is a deficient number, since it is larger than the sum of its proper divisors (37408185).

51011055 is a wasteful number, since it uses less digits than its factorization.

51011055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133590 (or 1133587 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

The square root of 51011055 is about 7142.2023914196. The cubic root of 51011055 is about 370.8697702137.

The spelling of 51011055 in words is "fifty-one million, eleven thousand, fifty-five".