51943775 has 24 divisors (see below), whose sum is σ = 72391200. Its totient is φ = 36685440.

The previous prime is 51943753. The next prime is 51943783. The reversal of 51943775 is 57734915.

It is not a de Polignac number, because 51943775 - 2⁶ = 51943711 is a prime.

It is a super-2 number, since 2×51943775² = 5396311522501250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4001 + ... + 10949.

It is an arithmetic number, because the mean of its divisors is an integer number (3016300).

Almost surely, 2^51943775 is an apocalyptic number.

51943775 is a deficient number, since it is larger than the sum of its proper divisors (20447425).

51943775 is a wasteful number, since it uses less digits than its factorization.

51943775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6995 (or 6990 counting only the distinct ones).

The product of its digits is 132300, while the sum is 41.

The square root of 51943775 is about 7207.2029942274. The cubic root of 51943775 is about 373.1165412443.

The spelling of 51943775 in words is "fifty-one million, nine hundred forty-three thousand, seven hundred seventy-five".