57621223 has 4 divisors (see below), whose sum is σ = 62859528. Its totient is φ = 52382920.

The previous prime is 57621191. The next prime is 57621253. The reversal of 57621223 is 32212675.

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

It is a cyclic number.

It is not a de Polignac number, because 57621223 - 2⁵ = 57621191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57621191 and 57621200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57621253) 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, 2619136 + ... + 2619157.

It is an arithmetic number, because the mean of its divisors is an integer number (15714882).

Almost surely, 2^57621223 is an apocalyptic number.

57621223 is a deficient number, since it is larger than the sum of its proper divisors (5238305).

57621223 is a wasteful number, since it uses less digits than its factorization.

57621223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5238304.

The product of its digits is 5040, while the sum is 28.

The square root of 57621223 is about 7590.8644435268. The cubic root of 57621223 is about 386.2431799189.

Adding to 57621223 its reverse (32212675), we get a palindrome (89833898).

The spelling of 57621223 in words is "fifty-seven million, six hundred twenty-one thousand, two hundred twenty-three".