55649129 has 2 divisors, whose sum is σ = 55649130. Its totient is φ = 55649128.

The previous prime is 55649107. The next prime is 55649171. The reversal of 55649129 is 92194655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29106025 + 26543104 = 5395^2 + 5152^2 .

It is a cyclic number.

It is not a de Polignac number, because 55649129 - 2¹² = 55645033 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55649179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27824564 + 27824565.

It is an arithmetic number, because the mean of its divisors is an integer number (27824565).

Almost surely, 2^55649129 is an apocalyptic number.

It is an amenable number.

55649129 is a deficient number, since it is larger than the sum of its proper divisors (1).

55649129 is an equidigital number, since it uses as much as digits as its factorization.

55649129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 41.

The square root of 55649129 is about 7459.8343815396. The cubic root of 55649129 is about 381.7855237288.

The spelling of 55649129 in words is "fifty-five million, six hundred forty-nine thousand, one hundred twenty-nine".