57444407 has 4 divisors (see below), whose sum is σ = 57542856. Its totient is φ = 57345960.

The previous prime is 57444397. The next prime is 57444437. The reversal of 57444407 is 70444475.

57444407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 57444407 - 2¹² = 57440311 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 (57444437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48344 + ... + 49517.

It is an arithmetic number, because the mean of its divisors is an integer number (14385714).

Almost surely, 2^57444407 is an apocalyptic number.

57444407 is a deficient number, since it is larger than the sum of its proper divisors (98449).

57444407 is an equidigital number, since it uses as much as digits as its factorization.

57444407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98448.

The product of its (nonzero) digits is 62720, while the sum is 35.

The square root of 57444407 is about 7579.2088637271. The cubic root of 57444407 is about 385.8477009309.

The spelling of 57444407 in words is "fifty-seven million, four hundred forty-four thousand, four hundred seven".