51553651 has 8 divisors (see below), whose sum is σ = 53691264. Its totient is φ = 49445760.

The previous prime is 51553637. The next prime is 51553693. The reversal of 51553651 is 15635515.

51553651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51553651 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51553451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3856 + ... + 10861.

It is an arithmetic number, because the mean of its divisors is an integer number (6711408).

Almost surely, 2^51553651 is an apocalyptic number.

51553651 is a deficient number, since it is larger than the sum of its proper divisors (2137613).

51553651 is a wasteful number, since it uses less digits than its factorization.

51553651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14861.

The product of its digits is 11250, while the sum is 31.

The square root of 51553651 is about 7180.0871164631. The cubic root of 51553651 is about 372.1800949955.

The spelling of 51553651 in words is "fifty-one million, five hundred fifty-three thousand, six hundred fifty-one".