55549237 has 2 divisors, whose sum is σ = 55549238. Its totient is φ = 55549236.

The previous prime is 55549229. The next prime is 55549271. The reversal of 55549237 is 73294555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55219761 + 329476 = 7431^2 + 574^2 .

It is a cyclic number.

It is not a de Polignac number, because 55549237 - 2³ = 55549229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55549237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55549037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27774618 + 27774619.

It is an arithmetic number, because the mean of its divisors is an integer number (27774619).

Almost surely, 2^55549237 is an apocalyptic number.

It is an amenable number.

55549237 is a deficient number, since it is larger than the sum of its proper divisors (1).

55549237 is an equidigital number, since it uses as much as digits as its factorization.

55549237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 189000, while the sum is 40.

The square root of 55549237 is about 7453.1360513545. The cubic root of 55549237 is about 381.5569477549.

The spelling of 55549237 in words is "fifty-five million, five hundred forty-nine thousand, two hundred thirty-seven".