149654257 has 2 divisors, whose sum is σ = 149654258. Its totient is φ = 149654256.

The previous prime is 149654243. The next prime is 149654273. The reversal of 149654257 is 752456941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81162081 + 68492176 = 9009^2 + 8276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149654257 is a prime.

It is not a weakly prime, because it can be changed into another prime (149654207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74827128 + 74827129.

It is an arithmetic number, because the mean of its divisors is an integer number (74827129).

Almost surely, 2^149654257 is an apocalyptic number.

It is an amenable number.

149654257 is a deficient number, since it is larger than the sum of its proper divisors (1).

149654257 is an equidigital number, since it uses as much as digits as its factorization.

149654257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 43.

The square root of 149654257 is about 12233.3256721139. The cubic root of 149654257 is about 530.9207408037.

The spelling of 149654257 in words is "one hundred forty-nine million, six hundred fifty-four thousand, two hundred fifty-seven".