51943356 has 30 divisors (see below), whose sum is σ = 135791040. Its totient is φ = 17314344.

The previous prime is 51943349. The next prime is 51943393. The reversal of 51943356 is 65334915.

It is a super-2 number, since 2×51943356² = 5396224465085472, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 51943356.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 79836 + ... + 80483.

It is an arithmetic number, because the mean of its divisors is an integer number (4526368).

Almost surely, 2^51943356 is an apocalyptic number.

It is an amenable number.

51943356 is an abundant number, since it is smaller than the sum of its proper divisors (83847684).

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

51943356 is a wasteful number, since it uses less digits than its factorization.

51943356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160335 (or 160324 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The square root of 51943356 is about 7207.1739260268. The cubic root of 51943356 is about 373.1155380040.

The spelling of 51943356 in words is "fifty-one million, nine hundred forty-three thousand, three hundred fifty-six".