147520657 has 2 divisors, whose sum is σ = 147520658. Its totient is φ = 147520656.

The previous prime is 147520613. The next prime is 147520669. The reversal of 147520657 is 756025741.

147520657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89699841 + 57820816 = 9471^2 + 7604^2 .

It is a cyclic number.

It is not a de Polignac number, because 147520657 - 2¹⁵ = 147487889 is a prime.

It is not a weakly prime, because it can be changed into another prime (147520697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73760328 + 73760329.

It is an arithmetic number, because the mean of its divisors is an integer number (73760329).

Almost surely, 2^147520657 is an apocalyptic number.

It is an amenable number.

147520657 is a deficient number, since it is larger than the sum of its proper divisors (1).

147520657 is an equidigital number, since it uses as much as digits as its factorization.

147520657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 147520657 is about 12145.8082069494. The cubic root of 147520657 is about 528.3855666784.

The spelling of 147520657 in words is "one hundred forty-seven million, five hundred twenty thousand, six hundred fifty-seven".