57208811 has 4 divisors (see below), whose sum is σ = 62409624. Its totient is φ = 52008000.

The previous prime is 57208807. The next prime is 57208831. The reversal of 57208811 is 11880275.

It is a happy number.

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

It is not a de Polignac number, because 57208811 - 2² = 57208807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57208831) 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, 2600390 + ... + 2600411.

It is an arithmetic number, because the mean of its divisors is an integer number (15602406).

Almost surely, 2^57208811 is an apocalyptic number.

57208811 is a deficient number, since it is larger than the sum of its proper divisors (5200813).

57208811 is a wasteful number, since it uses less digits than its factorization.

57208811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5200812.

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 57208811 is about 7563.6506397374. The cubic root of 57208811 is about 385.3194874323.

The spelling of 57208811 in words is "fifty-seven million, two hundred eight thousand, eight hundred eleven".