57216494 has 4 divisors (see below), whose sum is σ = 85824744. Its totient is φ = 28608246.

The previous prime is 57216491. The next prime is 57216499. The reversal of 57216494 is 49461275.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57216491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14304122 + ... + 14304125.

It is an arithmetic number, because the mean of its divisors is an integer number (21456186).

Almost surely, 2^57216494 is an apocalyptic number.

57216494 is a deficient number, since it is larger than the sum of its proper divisors (28608250).

57216494 is a wasteful number, since it uses less digits than its factorization.

57216494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28608249.

The product of its digits is 60480, while the sum is 38.

The square root of 57216494 is about 7564.1585123528. The cubic root of 57216494 is about 385.3367358075.

The spelling of 57216494 in words is "fifty-seven million, two hundred sixteen thousand, four hundred ninety-four".