57050406 has 60 divisors (see below), whose sum is σ = 148726908. Its totient is φ = 16297848.

The previous prime is 57050387. The next prime is 57050429. The reversal of 57050406 is 60405075.

57050406 is a `hidden beast` number, since 570 + 50 + 40 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 57050406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 4345 + ... + 11531.

Almost surely, 2^57050406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57050406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74363454).

57050406 is an abundant number, since it is smaller than the sum of its proper divisors (91676502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57050406 is a wasteful number, since it uses less digits than its factorization.

57050406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7215 (or 7199 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 57050406 is about 7553.1719164865. The cubic root of 57050406 is about 384.9635227148.

The spelling of 57050406 in words is "fifty-seven million, fifty thousand, four hundred six".