57039261 has 4 divisors (see below), whose sum is σ = 76052352. Its totient is φ = 38026172.

The previous prime is 57039251. The next prime is 57039263. The reversal of 57039261 is 16293075.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57039261 - 2¹⁴ = 57022877 is a prime.

It is a super-2 number, since 2×57039261² = 6506954590852242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57039263) 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, 9506541 + ... + 9506546.

It is an arithmetic number, because the mean of its divisors is an integer number (19013088).

Almost surely, 2^57039261 is an apocalyptic number.

It is an amenable number.

57039261 is a deficient number, since it is larger than the sum of its proper divisors (19013091).

57039261 is a wasteful number, since it uses less digits than its factorization.

57039261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19013090.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 57039261 is about 7552.4341109340. The cubic root of 57039261 is about 384.9384530839.

The spelling of 57039261 in words is "fifty-seven million, thirty-nine thousand, two hundred sixty-one".