57551109 has 64 divisors (see below), whose sum is σ = 101191680. Its totient is φ = 28459200.

The previous prime is 57551099. The next prime is 57551111. The reversal of 57551109 is 90115575.

It is not a de Polignac number, because 57551109 - 2¹¹ = 57549061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 57551109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57551149) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 810544 + ... + 810614.

It is an arithmetic number, because the mean of its divisors is an integer number (1581120).

Almost surely, 2^57551109 is an apocalyptic number.

It is an amenable number.

57551109 is a deficient number, since it is larger than the sum of its proper divisors (43640571).

57551109 is a wasteful number, since it uses less digits than its factorization.

57551109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 7875, while the sum is 33.

The square root of 57551109 is about 7586.2447231816. The cubic root of 57551109 is about 386.0864549919.

The spelling of 57551109 in words is "fifty-seven million, five hundred fifty-one thousand, one hundred nine".