45155239 has 2 divisors, whose sum is σ = 45155240. Its totient is φ = 45155238.

The previous prime is 45155221. The next prime is 45155269. The reversal of 45155239 is 93255154.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45155239 - 2¹⁹ = 44630951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45155269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22577619 + 22577620.

It is an arithmetic number, because the mean of its divisors is an integer number (22577620).

Almost surely, 2^45155239 is an apocalyptic number.

45155239 is a deficient number, since it is larger than the sum of its proper divisors (1).

45155239 is an equidigital number, since it uses as much as digits as its factorization.

45155239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 34.

The square root of 45155239 is about 6719.7648024317. The cubic root of 45155239 is about 356.0978747638.

The spelling of 45155239 in words is "forty-five million, one hundred fifty-five thousand, two hundred thirty-nine".