154031661 has 12 divisors (see below), whose sum is σ = 254274592. Its totient is φ = 88018056.

The previous prime is 154031617. The next prime is 154031681. The reversal of 154031661 is 166130451.

154031661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 154031661 - 2⁶ = 154031597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154031681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1222411 + ... + 1222536.

Almost surely, 2^154031661 is an apocalyptic number.

It is an amenable number.

154031661 is a deficient number, since it is larger than the sum of its proper divisors (100242931).

154031661 is a wasteful number, since it uses less digits than its factorization.

154031661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444960 (or 2444957 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 154031661 is about 12410.9492384749. The cubic root of 154031661 is about 536.0475715649.

The spelling of 154031661 in words is "one hundred fifty-four million, thirty-one thousand, six hundred sixty-one".