56542228 has 24 divisors (see below), whose sum is σ = 102964680. Its totient is φ = 27135360.

The previous prime is 56542219. The next prime is 56542231. The reversal of 56542228 is 82224565.

It can be written as a sum of positive squares in 4 ways, for example, as 21904 + 56520324 = 148^2 + 7518^2 .

It is a junction number, because it is equal to n+sod(n) for n = 56542193 and 56542202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19650 + ... + 22342.

It is an arithmetic number, because the mean of its divisors is an integer number (4290195).

Almost surely, 2^56542228 is an apocalyptic number.

56542228 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

56542228 is a deficient number, since it is larger than the sum of its proper divisors (46422452).

56542228 is a wasteful number, since it uses less digits than its factorization.

56542228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2907 (or 2905 counting only the distinct ones).

The product of its digits is 38400, while the sum is 34.

The square root of 56542228 is about 7519.4566293051. The cubic root of 56542228 is about 383.8170877273.

The spelling of 56542228 in words is "fifty-six million, five hundred forty-two thousand, two hundred twenty-eight".