51633601 has 4 divisors (see below), whose sum is σ = 53414100. Its totient is φ = 49853104.

The previous prime is 51633563. The next prime is 51633619. The reversal of 51633601 is 10633615.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8271376 + 43362225 = 2876^2 + 6585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51633601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51633671) 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, 890206 + ... + 890263.

It is an arithmetic number, because the mean of its divisors is an integer number (13353525).

Almost surely, 2^51633601 is an apocalyptic number.

It is an amenable number.

51633601 is a deficient number, since it is larger than the sum of its proper divisors (1780499).

51633601 is a wasteful number, since it uses less digits than its factorization.

51633601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780498.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 51633601 is about 7185.6524408017. The cubic root of 51633601 is about 372.3723893619.

The spelling of 51633601 in words is "fifty-one million, six hundred thirty-three thousand, six hundred one".