51944388 has 24 divisors (see below), whose sum is σ = 122666208. Its totient is φ = 17105856.

The previous prime is 51944383. The next prime is 51944393. The reversal of 51944388 is 88344915.

It is an interprime number because it is at equal distance from previous prime (51944383) and next prime (51944393).

It is not an unprimeable number, because it can be changed into a prime (51944383) 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, 25081 + ... + 27072.

It is an arithmetic number, because the mean of its divisors is an integer number (5111092).

Almost surely, 2^51944388 is an apocalyptic number.

It is an amenable number.

51944388 is an abundant number, since it is smaller than the sum of its proper divisors (70721820).

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

51944388 is a wasteful number, since it uses less digits than its factorization.

51944388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52243 (or 52241 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 51944388 is about 7207.2455210018. The cubic root of 51944388 is about 373.1180089821.

The spelling of 51944388 in words is "fifty-one million, nine hundred forty-four thousand, three hundred eighty-eight".