52591391 has 8 divisors (see below), whose sum is σ = 53160624. Its totient is φ = 52024960.

The previous prime is 52591367. The next prime is 52591403. The reversal of 52591391 is 19319525.

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 52591391 - 2²² = 48397087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52591291) 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, 77345 + ... + 78021.

It is an arithmetic number, because the mean of its divisors is an integer number (6645078).

Almost surely, 2^52591391 is an apocalyptic number.

52591391 is a deficient number, since it is larger than the sum of its proper divisors (569233).

52591391 is a wasteful number, since it uses less digits than its factorization.

52591391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401.

The product of its digits is 12150, while the sum is 35.

The square root of 52591391 is about 7251.9922090416. The cubic root of 52591391 is about 374.6607681802.

The spelling of 52591391 in words is "fifty-two million, five hundred ninety-one thousand, three hundred ninety-one".