51606601 has 8 divisors (see below), whose sum is σ = 53143304. Its totient is φ = 50077440.

The previous prime is 51606559. The next prime is 51606617. The reversal of 51606601 is 10660615.

It can be written as a sum of positive squares in 4 ways, for example, as 12531600 + 39075001 = 3540^2 + 6251^2 .

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 51606601 - 2⁷ = 51606473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51606691) 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, 13921 + ... + 17233.

It is an arithmetic number, because the mean of its divisors is an integer number (6642913).

Almost surely, 2^51606601 is an apocalyptic number.

It is an amenable number.

51606601 is a deficient number, since it is larger than the sum of its proper divisors (1536703).

51606601 is a wasteful number, since it uses less digits than its factorization.

51606601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3771.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 51606601 is about 7183.7734513277. The cubic root of 51606601 is about 372.3074716384.

The spelling of 51606601 in words is "fifty-one million, six hundred six thousand, six hundred one".