51130642 has 16 divisors (see below), whose sum is σ = 79103232. Its totient is φ = 24773760.

The previous prime is 51130631. The next prime is 51130643. The reversal of 51130642 is 24603115.

It is a super-2 number, since 2×51130642² = 5228685102664328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51130643) 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, 7042 + ... + 12322.

It is an arithmetic number, because the mean of its divisors is an integer number (4943952).

Almost surely, 2^51130642 is an apocalyptic number.

51130642 is a deficient number, since it is larger than the sum of its proper divisors (27972590).

51130642 is a wasteful number, since it uses less digits than its factorization.

51130642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5433.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 51130642 is about 7150.5693479610. The cubic root of 51130642 is about 371.1593583579.

Adding to 51130642 its reverse (24603115), we get a palindrome (75733757).

The spelling of 51130642 in words is "fifty-one million, one hundred thirty thousand, six hundred forty-two".