51293384 has 8 divisors (see below), whose sum is σ = 96175110. Its totient is φ = 25646688.

The previous prime is 51293383. The next prime is 51293387. The reversal of 51293384 is 48339215.

It can be written as a sum of positive squares in only one way, i.e., 46104100 + 5189284 = 6790^2 + 2278^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×51293384² = 5262022484342912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51293383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3205829 + ... + 3205844.

Almost surely, 2^51293384 is an apocalyptic number.

It is an amenable number.

51293384 is a deficient number, since it is larger than the sum of its proper divisors (44881726).

51293384 is a wasteful number, since it uses less digits than its factorization.

51293384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6411679 (or 6411675 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 51293384 is about 7161.9399606531. The cubic root of 51293384 is about 371.5527248527.

The spelling of 51293384 in words is "fifty-one million, two hundred ninety-three thousand, three hundred eighty-four".