51152530 has 32 divisors (see below), whose sum is σ = 108174528. Its totient is φ = 17169600.

The previous prime is 51152513. The next prime is 51152551. The reversal of 51152530 is 3525115.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16456 + ... + 19315.

It is an arithmetic number, because the mean of its divisors is an integer number (3380454).

Almost surely, 2^51152530 is an apocalyptic number.

51152530 is an abundant number, since it is smaller than the sum of its proper divisors (57021998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51152530 is a wasteful number, since it uses less digits than its factorization.

51152530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35802.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 51152530 is about 7152.0996916989. The cubic root of 51152530 is about 371.2123127558.

Adding to 51152530 its reverse (3525115), we get a palindrome (54677645).

The spelling of 51152530 in words is "fifty-one million, one hundred fifty-two thousand, five hundred thirty".