57868991 has 2 divisors, whose sum is σ = 57868992. Its totient is φ = 57868990.

The previous prime is 57868973. The next prime is 57869017. The reversal of 57868991 is 19986875.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57868991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57862991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28934495 + 28934496.

It is an arithmetic number, because the mean of its divisors is an integer number (28934496).

Almost surely, 2^57868991 is an apocalyptic number.

57868991 is a deficient number, since it is larger than the sum of its proper divisors (1).

57868991 is an equidigital number, since it uses as much as digits as its factorization.

57868991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 53.

The square root of 57868991 is about 7607.1670811150. The cubic root of 57868991 is about 386.7959962577.

The spelling of 57868991 in words is "fifty-seven million, eight hundred sixty-eight thousand, nine hundred ninety-one".