51248972 has 6 divisors (see below), whose sum is σ = 89685708. Its totient is φ = 25624484.

The previous prime is 51248971. The next prime is 51248987. The reversal of 51248972 is 27984215.

It is not an unprimeable number, because it can be changed into a prime (51248971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6406118 + ... + 6406125.

It is an arithmetic number, because the mean of its divisors is an integer number (14947618).

Almost surely, 2^51248972 is an apocalyptic number.

It is an amenable number.

51248972 is a deficient number, since it is larger than the sum of its proper divisors (38436736).

51248972 is a wasteful number, since it uses less digits than its factorization.

51248972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12812247 (or 12812245 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The square root of 51248972 is about 7158.8387326437. The cubic root of 51248972 is about 371.4454584883.

The spelling of 51248972 in words is "fifty-one million, two hundred forty-eight thousand, nine hundred seventy-two".