57309479 has 8 divisors (see below), whose sum is σ = 57766608. Its totient is φ = 56854720.

The previous prime is 57309457. The next prime is 57309493. The reversal of 57309479 is 97490375.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57309479 - 2¹² = 57305383 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 (57309409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109739 + ... + 110259.

It is an arithmetic number, because the mean of its divisors is an integer number (7220826).

Almost surely, 2^57309479 is an apocalyptic number.

57309479 is a deficient number, since it is larger than the sum of its proper divisors (457129).

57309479 is a wasteful number, since it uses less digits than its factorization.

57309479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185.

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 57309479 is about 7570.3024378158. The cubic root of 57309479 is about 385.5453652980.

The spelling of 57309479 in words is "fifty-seven million, three hundred nine thousand, four hundred seventy-nine".