57072007 has 4 divisors (see below), whose sum is σ = 57923896. Its totient is φ = 56220120.

The previous prime is 57071977. The next prime is 57072011. The reversal of 57072007 is 70027075.

It is a happy number.

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 57072007 - 2¹⁹ = 56547719 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 (57072307) 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, 425844 + ... + 425977.

It is an arithmetic number, because the mean of its divisors is an integer number (14480974).

Almost surely, 2^57072007 is an apocalyptic number.

57072007 is a deficient number, since it is larger than the sum of its proper divisors (851889).

57072007 is an equidigital number, since it uses as much as digits as its factorization.

57072007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851888.

The product of its (nonzero) digits is 3430, while the sum is 28.

The square root of 57072007 is about 7554.6017102161. The cubic root of 57072007 is about 385.0121028410.

The spelling of 57072007 in words is "fifty-seven million, seventy-two thousand, seven".