57001945 has 48 divisors (see below), whose sum is σ = 93538368. Its totient is φ = 32780160.

The previous prime is 57001939. The next prime is 57001949. The reversal of 57001945 is 54910075.

It is not a de Polignac number, because 57001945 - 2⁵ = 57001913 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57001949) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34222 + ... + 35848.

It is an arithmetic number, because the mean of its divisors is an integer number (1948716).

Almost surely, 2^57001945 is an apocalyptic number.

57001945 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

57001945 is a deficient number, since it is larger than the sum of its proper divisors (36536423).

57001945 is a wasteful number, since it uses less digits than its factorization.

57001945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670 (or 1663 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 57001945 is about 7549.9632449436. The cubic root of 57001945 is about 384.8544904666.

The spelling of 57001945 in words is "fifty-seven million, one thousand, nine hundred forty-five".