51124665 has 8 divisors (see below), whose sum is σ = 81799488. Its totient is φ = 27266480.

The previous prime is 51124657. The next prime is 51124669. The reversal of 51124665 is 56642115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51124665 - 2³ = 51124657 is a prime.

It is a super-2 number, since 2×51124665² = 5227462742724450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51124669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1704141 + ... + 1704170.

It is an arithmetic number, because the mean of its divisors is an integer number (10224936).

Almost surely, 2^51124665 is an apocalyptic number.

It is an amenable number.

51124665 is a deficient number, since it is larger than the sum of its proper divisors (30674823).

51124665 is a wasteful number, since it uses less digits than its factorization.

51124665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3408319.

The product of its digits is 7200, while the sum is 30.

The square root of 51124665 is about 7150.1513969985. The cubic root of 51124665 is about 371.1448953676.

The spelling of 51124665 in words is "fifty-one million, one hundred twenty-four thousand, six hundred sixty-five".