57228946 has 4 divisors (see below), whose sum is σ = 85843422. Its totient is φ = 28614472.

The previous prime is 57228937. The next prime is 57228947. The reversal of 57228946 is 64982275.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 49857721 + 7371225 = 7061^2 + 2715^2 .

It is not an unprimeable number, because it can be changed into a prime (57228947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14307235 + ... + 14307238.

Almost surely, 2^57228946 is an apocalyptic number.

57228946 is a deficient number, since it is larger than the sum of its proper divisors (28614476).

57228946 is a wasteful number, since it uses less digits than its factorization.

57228946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28614475.

The product of its digits is 241920, while the sum is 43.

The square root of 57228946 is about 7564.9815597925. The cubic root of 57228946 is about 385.3646873337.

The spelling of 57228946 in words is "fifty-seven million, two hundred twenty-eight thousand, nine hundred forty-six".