51045507 has 12 divisors (see below), whose sum is σ = 73796944. Its totient is φ = 34000560.

The previous prime is 51045503. The next prime is 51045517. The reversal of 51045507 is 70554015.

51045507 is a `hidden beast` number, since 5 + 104 + 550 + 7 = 666.

It is not a de Polignac number, because 51045507 - 2² = 51045503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51045503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14457 + ... + 17637.

Almost surely, 2^51045507 is an apocalyptic number.

51045507 is a deficient number, since it is larger than the sum of its proper divisors (22751437).

51045507 is a wasteful number, since it uses less digits than its factorization.

51045507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4970 (or 4967 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 51045507 is about 7144.6138454083. The cubic root of 51045507 is about 370.9532444717.

The spelling of 51045507 in words is "fifty-one million, forty-five thousand, five hundred seven".