51291292 has 24 divisors (see below), whose sum is σ = 96866336. Its totient is φ = 23623488.

The previous prime is 51291281. The next prime is 51291299. The reversal of 51291292 is 29219215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51291299) 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, 38713 + ... + 40015.

Almost surely, 2^51291292 is an apocalyptic number.

51291292 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51291292 is a deficient number, since it is larger than the sum of its proper divisors (45575044).

51291292 is a wasteful number, since it uses less digits than its factorization.

51291292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077 (or 2075 counting only the distinct ones).

The product of its digits is 3240, while the sum is 31.

The square root of 51291292 is about 7161.7939093498. The cubic root of 51291292 is about 371.5476735263.

The spelling of 51291292 in words is "fifty-one million, two hundred ninety-one thousand, two hundred ninety-two".