57263399 has 4 divisors (see below), whose sum is σ = 59753136. Its totient is φ = 54773664.

The previous prime is 57263389. The next prime is 57263407. The reversal of 57263399 is 99336275.

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 57263399 - 2¹² = 57259303 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 (57263329) 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, 1244834 + ... + 1244879.

It is an arithmetic number, because the mean of its divisors is an integer number (14938284).

Almost surely, 2^57263399 is an apocalyptic number.

57263399 is a deficient number, since it is larger than the sum of its proper divisors (2489737).

57263399 is a wasteful number, since it uses less digits than its factorization.

57263399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2489736.

The product of its digits is 306180, while the sum is 44.

The square root of 57263399 is about 7567.2583542522. The cubic root of 57263399 is about 385.4420043039.

The spelling of 57263399 in words is "fifty-seven million, two hundred sixty-three thousand, three hundred ninety-nine".