55982477 has 2 divisors, whose sum is σ = 55982478. Its totient is φ = 55982476.

The previous prime is 55982473. The next prime is 55982491. The reversal of 55982477 is 77428955.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55860676 + 121801 = 7474^2 + 349^2 .

It is a cyclic number.

It is not a de Polignac number, because 55982477 - 2² = 55982473 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55982471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27991238 + 27991239.

It is an arithmetic number, because the mean of its divisors is an integer number (27991239).

Almost surely, 2^55982477 is an apocalyptic number.

It is an amenable number.

55982477 is a deficient number, since it is larger than the sum of its proper divisors (1).

55982477 is an equidigital number, since it uses as much as digits as its factorization.

55982477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 705600, while the sum is 47.

The square root of 55982477 is about 7482.1438772587. The cubic root of 55982477 is about 382.5463272807.

The spelling of 55982477 in words is "fifty-five million, nine hundred eighty-two thousand, four hundred seventy-seven".