154255661 has 12 divisors (see below), whose sum is σ = 186062112. Its totient is φ = 125258184.

The previous prime is 154255657. The next prime is 154255679. The reversal of 154255661 is 166552451.

It is not a de Polignac number, because 154255661 - 2² = 154255657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154255681) 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, 27995 + ... + 33048.

It is an arithmetic number, because the mean of its divisors is an integer number (15505176).

Almost surely, 2^154255661 is an apocalyptic number.

It is an amenable number.

154255661 is a deficient number, since it is larger than the sum of its proper divisors (31806451).

154255661 is an equidigital number, since it uses as much as digits as its factorization.

154255661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61088 (or 61069 counting only the distinct ones).

The product of its digits is 36000, while the sum is 35.

The square root of 154255661 is about 12419.9702495618. The cubic root of 154255661 is about 536.3072941357.

The spelling of 154255661 in words is "one hundred fifty-four million, two hundred fifty-five thousand, six hundred sixty-one".