51117075 has 30 divisors (see below), whose sum is σ = 94690244. Its totient is φ = 27261360.

The previous prime is 51117041. The next prime is 51117083. The reversal of 51117075 is 57071115.

It is not a de Polignac number, because 51117075 - 2⁹ = 51116563 is a prime.

It is a super-2 number, since 2×51117075² = 5225910713111250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 10597 + ... + 14646.

Almost surely, 2^51117075 is an apocalyptic number.

51117075 is a deficient number, since it is larger than the sum of its proper divisors (43573169).

51117075 is a wasteful number, since it uses less digits than its factorization.

51117075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25265 (or 25251 counting only the distinct ones).

The product of its (nonzero) digits is 1225, while the sum is 27.

The square root of 51117075 is about 7149.6206193056. The cubic root of 51117075 is about 371.1265276569.

The spelling of 51117075 in words is "fifty-one million, one hundred seventeen thousand, seventy-five".