51495051 has 4 divisors (see below), whose sum is σ = 68660072. Its totient is φ = 34330032.

The previous prime is 51495049. The next prime is 51495053. The reversal of 51495051 is 15059415.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (51495049) and next prime (51495053).

It is not a de Polignac number, because 51495051 - 2¹ = 51495049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51495053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8582506 + ... + 8582511.

It is an arithmetic number, because the mean of its divisors is an integer number (17165018).

Almost surely, 2^51495051 is an apocalyptic number.

51495051 is a deficient number, since it is larger than the sum of its proper divisors (17165021).

51495051 is a wasteful number, since it uses less digits than its factorization.

51495051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17165020.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 51495051 is about 7176.0052257506. The cubic root of 51495051 is about 372.0390249844.

The spelling of 51495051 in words is "fifty-one million, four hundred ninety-five thousand, fifty-one".