51400472 has 16 divisors (see below), whose sum is σ = 101448600. Its totient is φ = 24347520.

The previous prime is 51400471. The next prime is 51400501. The reversal of 51400472 is 27400415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51400471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168929 + ... + 169232.

Almost surely, 2^51400472 is an apocalyptic number.

It is an amenable number.

51400472 is a deficient number, since it is larger than the sum of its proper divisors (50048128).

51400472 is a wasteful number, since it uses less digits than its factorization.

51400472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338186 (or 338182 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 51400472 is about 7169.4122492712. The cubic root of 51400472 is about 371.8111154247.

Adding to 51400472 its reverse (27400415), we get a palindrome (78800887).

The spelling of 51400472 in words is "fifty-one million, four hundred thousand, four hundred seventy-two".