154513729 has 2 divisors, whose sum is σ = 154513730. Its totient is φ = 154513728.

The previous prime is 154513637. The next prime is 154513759. The reversal of 154513729 is 927315451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87928129 + 66585600 = 9377^2 + 8160^2 .

It is a cyclic number.

It is not a de Polignac number, because 154513729 - 2⁹ = 154513217 is a prime.

It is not a weakly prime, because it can be changed into another prime (154513759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77256864 + 77256865.

It is an arithmetic number, because the mean of its divisors is an integer number (77256865).

Almost surely, 2^154513729 is an apocalyptic number.

It is an amenable number.

154513729 is a deficient number, since it is larger than the sum of its proper divisors (1).

154513729 is an equidigital number, since it uses as much as digits as its factorization.

154513729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 37.

The square root of 154513729 is about 12430.3551437600. The cubic root of 154513729 is about 536.6062062122.

The spelling of 154513729 in words is "one hundred fifty-four million, five hundred thirteen thousand, seven hundred twenty-nine".