51011015 has 16 divisors (see below), whose sum is σ = 67723776. Its totient is φ = 36573600.

The previous prime is 51010997. The next prime is 51011041.

51011015 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51011015 - 2⁶ = 51010951 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2627 + ... + 10436.

It is an arithmetic number, because the mean of its divisors is an integer number (4232736).

Almost surely, 2^51011015 is an apocalyptic number.

51011015 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51011015 is a deficient number, since it is larger than the sum of its proper divisors (16712761).

51011015 is a wasteful number, since it uses less digits than its factorization.

51011015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13150.

The product of its (nonzero) digits is 25, while the sum is 14.

The square root of 51011015 is about 7142.1995911624. The cubic root of 51011015 is about 370.8696732753.

It can be divided in two parts, 5101 and 1015, that added together give a palindrome (6116).

The spelling of 51011015 in words is "fifty-one million, eleven thousand, fifteen".