51077015 has 16 divisors (see below), whose sum is σ = 68290560. Its totient is φ = 36354720.

The previous prime is 51077009. The next prime is 51077071.

51077015 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51077015 - 2⁸ = 51076759 is a prime.

It is a super-2 number, since 2×51077015² = 5217722922620450, which contains 22 as substring.

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, 7295 + ... + 12464.

It is an arithmetic number, because the mean of its divisors is an integer number (4268160).

Almost surely, 2^51077015 is an apocalyptic number.

51077015 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51077015 is a deficient number, since it is larger than the sum of its proper divisors (17213545).

51077015 is a wasteful number, since it uses less digits than its factorization.

51077015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19822.

The product of its (nonzero) digits is 1225, while the sum is 26.

The square root of 51077015 is about 7146.8185229513. The cubic root of 51077015 is about 371.0295527929.

The spelling of 51077015 in words is "fifty-one million, seventy-seven thousand, fifteen".