154155461 has 2 divisors, whose sum is σ = 154155462. Its totient is φ = 154155460.

The previous prime is 154155451. The next prime is 154155509. The reversal of 154155461 is 164551451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117310561 + 36844900 = 10831^2 + 6070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154155461 is a prime.

It is a super-2 number, since 2×154155461² = 47527812312245042, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154155451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77077730 + 77077731.

It is an arithmetic number, because the mean of its divisors is an integer number (77077731).

Almost surely, 2^154155461 is an apocalyptic number.

It is an amenable number.

154155461 is a deficient number, since it is larger than the sum of its proper divisors (1).

154155461 is an equidigital number, since it uses as much as digits as its factorization.

154155461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12000, while the sum is 32.

The square root of 154155461 is about 12415.9357681973. The cubic root of 154155461 is about 536.1911457660.

The spelling of 154155461 in words is "one hundred fifty-four million, one hundred fifty-five thousand, four hundred sixty-one".