52390957 has 8 divisors (see below), whose sum is σ = 55577016. Its totient is φ = 49216512.

The previous prime is 52390939. The next prime is 52390969. The reversal of 52390957 is 75909325.

It can be written as a sum of positive squares in 4 ways, for example, as 15594601 + 36796356 = 3949^2 + 6066^2 .

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-52390957 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 (52390057) 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, 7483 + ... + 12679.

It is an arithmetic number, because the mean of its divisors is an integer number (6947127).

Almost surely, 2^52390957 is an apocalyptic number.

It is an amenable number.

52390957 is a deficient number, since it is larger than the sum of its proper divisors (3186059).

52390957 is a wasteful number, since it uses less digits than its factorization.

52390957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5807.

The product of its (nonzero) digits is 85050, while the sum is 40.

The square root of 52390957 is about 7238.1597799441. The cubic root of 52390957 is about 374.1841986837.

The spelling of 52390957 in words is "fifty-two million, three hundred ninety thousand, nine hundred fifty-seven".