149511457 has 2 divisors, whose sum is σ = 149511458. Its totient is φ = 149511456.

The previous prime is 149511433. The next prime is 149511493. The reversal of 149511457 is 754115941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88811776 + 60699681 = 9424^2 + 7791^2 .

It is a cyclic number.

It is not a de Polignac number, because 149511457 - 2¹⁵ = 149478689 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (149511407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74755728 + 74755729.

It is an arithmetic number, because the mean of its divisors is an integer number (74755729).

Almost surely, 2^149511457 is an apocalyptic number.

It is an amenable number.

149511457 is a deficient number, since it is larger than the sum of its proper divisors (1).

149511457 is an equidigital number, since it uses as much as digits as its factorization.

149511457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 37.

The square root of 149511457 is about 12227.4877632325. The cubic root of 149511457 is about 530.7518189825.

The spelling of 149511457 in words is "one hundred forty-nine million, five hundred eleven thousand, four hundred fifty-seven".