51500452 has 6 divisors (see below), whose sum is σ = 90125798. Its totient is φ = 25750224.

The previous prime is 51500447. The next prime is 51500453. The reversal of 51500452 is 25400515.

It can be written as a sum of positive squares in only one way, i.e., 51494976 + 5476 = 7176^2 + 74^2 .

It is not an unprimeable number, because it can be changed into a prime (51500453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6437553 + ... + 6437560.

Almost surely, 2^51500452 is an apocalyptic number.

It is an amenable number.

51500452 is a deficient number, since it is larger than the sum of its proper divisors (38625346).

51500452 is a wasteful number, since it uses less digits than its factorization.

51500452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12875117 (or 12875115 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 51500452 is about 7176.3815394668. The cubic root of 51500452 is about 372.0520314934.

Adding to 51500452 its reverse (25400515), we get a palindrome (76900967).

The spelling of 51500452 in words is "fifty-one million, five hundred thousand, four hundred fifty-two".