51101564 has 24 divisors (see below), whose sum is σ = 94390800. Its totient is φ = 24140160.

The previous prime is 51101527. The next prime is 51101569. The reversal of 51101564 is 46510115.

It is a super-2 number, since 2×51101564² = 5222739686492192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51101569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38024 + ... + 39344.

It is an arithmetic number, because the mean of its divisors is an integer number (3932950).

Almost surely, 2^51101564 is an apocalyptic number.

It is an amenable number.

51101564 is a deficient number, since it is larger than the sum of its proper divisors (43289236).

51101564 is a wasteful number, since it uses less digits than its factorization.

51101564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853 (or 1851 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 51101564 is about 7148.5357941329. The cubic root of 51101564 is about 371.0889855641.

Adding to 51101564 its reverse (46510115), we get a palindrome (97611679).

The spelling of 51101564 in words is "fifty-one million, one hundred one thousand, five hundred sixty-four".