51154564 has 12 divisors (see below), whose sum is σ = 94786524. Its totient is φ = 24072704.

The previous prime is 51154561. The next prime is 51154573. The reversal of 51154564 is 46545115.

It can be written as a sum of positive squares in 2 ways, for example, as 21233664 + 29920900 = 4608^2 + 5470^2 .

It is not an unprimeable number, because it can be changed into a prime (51154561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376069 + ... + 376204.

It is an arithmetic number, because the mean of its divisors is an integer number (7898877).

Almost surely, 2^51154564 is an apocalyptic number.

It is an amenable number.

51154564 is a deficient number, since it is larger than the sum of its proper divisors (43631960).

51154564 is a wasteful number, since it uses less digits than its factorization.

51154564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752294 (or 752292 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

The square root of 51154564 is about 7152.2418862899. The cubic root of 51154564 is about 371.2172329154.

Adding to 51154564 its reverse (46545115), we get a palindrome (97699679).

The spelling of 51154564 in words is "fifty-one million, one hundred fifty-four thousand, five hundred sixty-four".