51252392 has 8 divisors (see below), whose sum is σ = 96098250. Its totient is φ = 25626192.

The previous prime is 51252391. The next prime is 51252401. The reversal of 51252392 is 29325215.

It can be written as a sum of positive squares in only one way, i.e., 45616516 + 5635876 = 6754^2 + 2374^2 .

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

It is not an unprimeable number, because it can be changed into a prime (51252391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3203267 + ... + 3203282.

Almost surely, 2^51252392 is an apocalyptic number.

It is an amenable number.

51252392 is a deficient number, since it is larger than the sum of its proper divisors (44845858).

51252392 is a wasteful number, since it uses less digits than its factorization.

51252392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6406555 (or 6406551 counting only the distinct ones).

The product of its digits is 5400, while the sum is 29.

The square root of 51252392 is about 7159.0775942156. The cubic root of 51252392 is about 371.4537208668.

The spelling of 51252392 in words is "fifty-one million, two hundred fifty-two thousand, three hundred ninety-two".