51527538 has 12 divisors (see below), whose sum is σ = 111643038. Its totient is φ = 17175840.

The previous prime is 51527537. The next prime is 51527573. The reversal of 51527538 is 83572515.

It can be written as a sum of positive squares in only one way, i.e., 46744569 + 4782969 = 6837^2 + 2187^2 .

It is not an unprimeable number, because it can be changed into a prime (51527533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1431303 + ... + 1431338.

Almost surely, 2^51527538 is an apocalyptic number.

51527538 is an abundant number, since it is smaller than the sum of its proper divisors (60115500).

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

51527538 is a wasteful number, since it uses less digits than its factorization.

51527538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2862649 (or 2862646 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 51527538 is about 7178.2684541608. The cubic root of 51527538 is about 372.1172453880.

The spelling of 51527538 in words is "fifty-one million, five hundred twenty-seven thousand, five hundred thirty-eight".