57325621 has 4 divisors (see below), whose sum is σ = 57616812. Its totient is φ = 57034432.

The previous prime is 57325601. The next prime is 57325627. The reversal of 57325621 is 12652375.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43375396 + 13950225 = 6586^2 + 3735^2 .

It is a cyclic number.

It is not a de Polignac number, because 57325621 - 2¹⁵ = 57292853 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 (57325627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145300 + ... + 145693.

It is an arithmetic number, because the mean of its divisors is an integer number (14404203).

Almost surely, 2^57325621 is an apocalyptic number.

It is an amenable number.

57325621 is a deficient number, since it is larger than the sum of its proper divisors (291191).

57325621 is a wasteful number, since it uses less digits than its factorization.

57325621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291190.

The product of its digits is 12600, while the sum is 31.

The square root of 57325621 is about 7571.3685024571. The cubic root of 57325621 is about 385.5815599449.

Adding to 57325621 its reverse (12652375), we get a palindrome (69977996).

The spelling of 57325621 in words is "fifty-seven million, three hundred twenty-five thousand, six hundred twenty-one".