57006407 has 4 divisors (see below), whose sum is σ = 57034296. Its totient is φ = 56978520.

The previous prime is 57006401. The next prime is 57006409. The reversal of 57006407 is 70460075.

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

It is a cyclic number.

It is not a de Polignac number, because 57006407 - 2⁶ = 57006343 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57006407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57006401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10613 + ... + 15054.

It is an arithmetic number, because the mean of its divisors is an integer number (14258574).

Almost surely, 2^57006407 is an apocalyptic number.

57006407 is a deficient number, since it is larger than the sum of its proper divisors (27889).

57006407 is a wasteful number, since it uses less digits than its factorization.

57006407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27888.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 57006407 is about 7550.2587372884. The cubic root of 57006407 is about 384.8645320885.

The spelling of 57006407 in words is "fifty-seven million, six thousand, four hundred seven".