57024781 has 8 divisors (see below), whose sum is σ = 62397504. Its totient is φ = 51683520.

The previous prime is 57024763. The next prime is 57024787. The reversal of 57024781 is 18742075.

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 57024781 - 2¹⁷ = 56893709 is a prime.

It is a super-2 number, since 2×57024781² = 6503651296195922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57024787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3985 + ... + 11398.

It is an arithmetic number, because the mean of its divisors is an integer number (7799688).

Almost surely, 2^57024781 is an apocalyptic number.

It is an amenable number.

57024781 is a deficient number, since it is larger than the sum of its proper divisors (5372723).

57024781 is a wasteful number, since it uses less digits than its factorization.

57024781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15731.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 57024781 is about 7551.4754187510. The cubic root of 57024781 is about 384.9058768055.

The spelling of 57024781 in words is "fifty-seven million, twenty-four thousand, seven hundred eighty-one".