51633901 has 8 divisors (see below), whose sum is σ = 56539008. Its totient is φ = 46764000.

The previous prime is 51633889. The next prime is 51633917. The reversal of 51633901 is 10933615.

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 51633901 - 2¹⁹ = 51109613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51633901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51633961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5680 + ... + 11641.

It is an arithmetic number, because the mean of its divisors is an integer number (7067376).

Almost surely, 2^51633901 is an apocalyptic number.

It is an amenable number.

51633901 is a deficient number, since it is larger than the sum of its proper divisors (4905107).

51633901 is a wasteful number, since it uses less digits than its factorization.

51633901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17603.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 51633901 is about 7185.6733157026. The cubic root of 51633901 is about 372.3731105428.

The spelling of 51633901 in words is "fifty-one million, six hundred thirty-three thousand, nine hundred one".