55420586 has 16 divisors (see below), whose sum is σ = 89675208. Its totient is φ = 25536000.

The previous prime is 55420583. The next prime is 55420649. The reversal of 55420586 is 68502455.

It can be written as a sum of positive squares in 4 ways, for example, as 18757561 + 36663025 = 4331^2 + 6055^2 .

It is not an unprimeable number, because it can be changed into a prime (55420583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18386 + ... + 21186.

Almost surely, 2^55420586 is an apocalyptic number.

55420586 is a deficient number, since it is larger than the sum of its proper divisors (34254622).

55420586 is a wasteful number, since it uses less digits than its factorization.

55420586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3577.

The product of its (nonzero) digits is 48000, while the sum is 35.

The square root of 55420586 is about 7444.5003861911. The cubic root of 55420586 is about 381.2621604649.

The spelling of 55420586 in words is "fifty-five million, four hundred twenty thousand, five hundred eighty-six".