57491747 has 8 divisors (see below), whose sum is σ = 59214336. Its totient is φ = 55778112.

The previous prime is 57491741. The next prime is 57491761. The reversal of 57491747 is 74719475.

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 57491747 - 2⁶ = 57491683 is a prime.

It is a super-2 number, since 2×57491747² = 6610601946224018, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57491698 and 57491707.

It is not an unprimeable number, because it can be changed into a prime (57491741) 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, 12143 + ... + 16199.

It is an arithmetic number, because the mean of its divisors is an integer number (7401792).

Almost surely, 2^57491747 is an apocalyptic number.

57491747 is a deficient number, since it is larger than the sum of its proper divisors (1722589).

57491747 is a wasteful number, since it uses less digits than its factorization.

57491747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4477.

The product of its digits is 246960, while the sum is 44.

The square root of 57491747 is about 7582.3312378186. The cubic root of 57491747 is about 385.9536643352.

The spelling of 57491747 in words is "fifty-seven million, four hundred ninety-one thousand, seven hundred forty-seven".