51606507 has 8 divisors (see below), whose sum is σ = 69221376. Its totient is φ = 34197992.

The previous prime is 51606491. The next prime is 51606521. The reversal of 51606507 is 70560615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51606507 - 2⁴ = 51606491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51606007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51003 + ... + 52004.

It is an arithmetic number, because the mean of its divisors is an integer number (8652672).

Almost surely, 2^51606507 is an apocalyptic number.

51606507 is a deficient number, since it is larger than the sum of its proper divisors (17614869).

51606507 is a wasteful number, since it uses less digits than its factorization.

51606507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103177.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 51606507 is about 7183.7669088021. The cubic root of 51606507 is about 372.3072455890.

The spelling of 51606507 in words is "fifty-one million, six hundred six thousand, five hundred seven".