51102664 has 16 divisors (see below), whose sum is σ = 96051420. Its totient is φ = 25488960.

The previous prime is 51102659. The next prime is 51102671. The reversal of 51102664 is 46620115.

It can be written as a sum of positive squares in 2 ways, for example, as 50552100 + 550564 = 7110^2 + 742^2 .

It is a super-2 number, since 2×51102664² = 5222964535793792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4219 + ... + 10954.

Almost surely, 2^51102664 is an apocalyptic number.

It is an amenable number.

51102664 is a deficient number, since it is larger than the sum of its proper divisors (44948756).

51102664 is a wasteful number, since it uses less digits than its factorization.

51102664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15600 (or 15596 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 51102664 is about 7148.6127325517. The cubic root of 51102664 is about 371.0916482025.

Adding to 51102664 its reverse (46620115), we get a palindrome (97722779).

The spelling of 51102664 in words is "fifty-one million, one hundred two thousand, six hundred sixty-four".