51996356 has 6 divisors (see below), whose sum is σ = 90993630. Its totient is φ = 25998176.

The previous prime is 51996349. The next prime is 51996383. The reversal of 51996356 is 65369915.

It can be written as a sum of positive squares in only one way, i.e., 27394756 + 24601600 = 5234^2 + 4960^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6499541 + ... + 6499548.

It is an arithmetic number, because the mean of its divisors is an integer number (15165605).

Almost surely, 2^51996356 is an apocalyptic number.

It is an amenable number.

51996356 is a deficient number, since it is larger than the sum of its proper divisors (38997274).

51996356 is a wasteful number, since it uses less digits than its factorization.

51996356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12999093 (or 12999091 counting only the distinct ones).

The product of its digits is 218700, while the sum is 44.

The square root of 51996356 is about 7210.8498805619. The cubic root of 51996356 is about 373.2423967148.

The spelling of 51996356 in words is "fifty-one million, nine hundred ninety-six thousand, three hundred fifty-six".