57228545 has 32 divisors (see below), whose sum is σ = 80269056. Its totient is φ = 38707200.

The previous prime is 57228539. The next prime is 57228557. The reversal of 57228545 is 54582275.

It is not a de Polignac number, because 57228545 - 2⁶ = 57228481 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57228499 and 57228508.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90380 + ... + 91010.

It is an arithmetic number, because the mean of its divisors is an integer number (2508408).

Almost surely, 2^57228545 is an apocalyptic number.

57228545 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

57228545 is a deficient number, since it is larger than the sum of its proper divisors (23040511).

57228545 is a wasteful number, since it uses less digits than its factorization.

57228545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761.

The product of its digits is 112000, while the sum is 38.

The square root of 57228545 is about 7564.9550560463. The cubic root of 57228545 is about 385.3637872554.

The spelling of 57228545 in words is "fifty-seven million, two hundred twenty-eight thousand, five hundred forty-five".