55025149 has 2 divisors, whose sum is σ = 55025150. Its totient is φ = 55025148.

The previous prime is 55025129. The next prime is 55025161. The reversal of 55025149 is 94152055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51222649 + 3802500 = 7157^2 + 1950^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55025149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55025149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55025119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27512574 + 27512575.

It is an arithmetic number, because the mean of its divisors is an integer number (27512575).

Almost surely, 2^55025149 is an apocalyptic number.

It is an amenable number.

55025149 is a deficient number, since it is larger than the sum of its proper divisors (1).

55025149 is an equidigital number, since it uses as much as digits as its factorization.

55025149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 55025149 is about 7417.8938385501. The cubic root of 55025149 is about 380.3532011536.

The spelling of 55025149 in words is "fifty-five million, twenty-five thousand, one hundred forty-nine".