51474756 has 24 divisors (see below), whose sum is σ = 123983104. Its totient is φ = 16604640.

The previous prime is 51474749. The next prime is 51474757. The reversal of 51474756 is 65747415.

It is not an unprimeable number, because it can be changed into a prime (51474757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68815 + ... + 69558.

Almost surely, 2^51474756 is an apocalyptic number.

It is an amenable number.

51474756 is an abundant number, since it is smaller than the sum of its proper divisors (72508348).

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

51474756 is a wasteful number, since it uses less digits than its factorization.

51474756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138411 (or 138409 counting only the distinct ones).

The product of its digits is 117600, while the sum is 39.

The square root of 51474756 is about 7174.5909987957. The cubic root of 51474756 is about 371.9901431080.

The spelling of 51474756 in words is "fifty-one million, four hundred seventy-four thousand, seven hundred fifty-six".