51945892 has 24 divisors (see below), whose sum is σ = 94563392. Its totient is φ = 24948000.

The previous prime is 51945889. The next prime is 51945899. The reversal of 51945892 is 29854915.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (51945899) 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, 8017 + ... + 12967.

Almost surely, 2^51945892 is an apocalyptic number.

It is an amenable number.

51945892 is a deficient number, since it is larger than the sum of its proper divisors (42617500).

51945892 is a wasteful number, since it uses less digits than its factorization.

51945892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5059 (or 5057 counting only the distinct ones).

The product of its digits is 129600, while the sum is 43.

The square root of 51945892 is about 7207.3498596918. The cubic root of 51945892 is about 373.1216100389.

The spelling of 51945892 in words is "fifty-one million, nine hundred forty-five thousand, eight hundred ninety-two".