51452591 has 16 divisors (see below), whose sum is σ = 56920320. Its totient is φ = 46295040.

The previous prime is 51452579. The next prime is 51452593. The reversal of 51452591 is 19525415.

51452591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51452591 - 2¹⁰ = 51451567 is a prime.

It is a super-2 number, since 2×51452591² = 5294738241226562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51452593) 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 15 ways as a sum of consecutive naturals, for example, 46355 + ... + 47451.

It is an arithmetic number, because the mean of its divisors is an integer number (3557520).

Almost surely, 2^51452591 is an apocalyptic number.

51452591 is a deficient number, since it is larger than the sum of its proper divisors (5467729).

51452591 is a wasteful number, since it uses less digits than its factorization.

51452591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234.

The product of its digits is 9000, while the sum is 32.

The square root of 51452591 is about 7173.0461451185. The cubic root of 51452591 is about 371.9367425294.

The spelling of 51452591 in words is "fifty-one million, four hundred fifty-two thousand, five hundred ninety-one".