51155075 has 6 divisors (see below), whose sum is σ = 63432324. Its totient is φ = 40924040.

The previous prime is 51155063. The next prime is 51155077. The reversal of 51155075 is 57055115.

It is not a de Polignac number, because 51155075 - 2²⁰ = 50106499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51155077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1023077 + ... + 1023126.

It is an arithmetic number, because the mean of its divisors is an integer number (10572054).

Almost surely, 2^51155075 is an apocalyptic number.

51155075 is a deficient number, since it is larger than the sum of its proper divisors (12277249).

51155075 is a wasteful number, since it uses less digits than its factorization.

51155075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046213 (or 2046208 counting only the distinct ones).

The product of its (nonzero) digits is 4375, while the sum is 29.

The square root of 51155075 is about 7152.2776092655. The cubic root of 51155075 is about 371.2184689822.

The spelling of 51155075 in words is "fifty-one million, one hundred fifty-five thousand, seventy-five".