55277986 has 8 divisors (see below), whose sum is σ = 83120940. Its totient is φ = 27571008.

The previous prime is 55277977. The next prime is 55277987. The reversal of 55277986 is 68977255.

It can be written as a sum of positive squares in 2 ways, for example, as 53012961 + 2265025 = 7281^2 + 1505^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (55277987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32971 + ... + 34606.

Almost surely, 2^55277986 is an apocalyptic number.

55277986 is a deficient number, since it is larger than the sum of its proper divisors (27842954).

55277986 is a wasteful number, since it uses less digits than its factorization.

55277986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67988.

The product of its digits is 1058400, while the sum is 49.

The square root of 55277986 is about 7434.9166774080. The cubic root of 55277986 is about 380.9348772578.

The spelling of 55277986 in words is "fifty-five million, two hundred seventy-seven thousand, nine hundred eighty-six".