154964521 has 2 divisors, whose sum is σ = 154964522. Its totient is φ = 154964520.

The previous prime is 154964507. The next prime is 154964591. The reversal of 154964521 is 125469451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100721296 + 54243225 = 10036^2 + 7365^2 .

It is a cyclic number.

It is not a de Polignac number, because 154964521 - 2⁵ = 154964489 is a prime.

It is not a weakly prime, because it can be changed into another prime (154964591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77482260 + 77482261.

It is an arithmetic number, because the mean of its divisors is an integer number (77482261).

Almost surely, 2^154964521 is an apocalyptic number.

It is an amenable number.

154964521 is a deficient number, since it is larger than the sum of its proper divisors (1).

154964521 is an equidigital number, since it uses as much as digits as its factorization.

154964521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 37.

The square root of 154964521 is about 12448.4746455138. The cubic root of 154964521 is about 537.1275469853.

The spelling of 154964521 in words is "one hundred fifty-four million, nine hundred sixty-four thousand, five hundred twenty-one".