154139557 has 16 divisors (see below), whose sum is σ = 181484352. Its totient is φ = 129064320.

The previous prime is 154139543. The next prime is 154139569. The reversal of 154139557 is 755931451.

It is not a de Polignac number, because 154139557 - 2⁷ = 154139429 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 (154139957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87358 + ... + 89104.

It is an arithmetic number, because the mean of its divisors is an integer number (11342772).

Almost surely, 2^154139557 is an apocalyptic number.

It is an amenable number.

154139557 is a deficient number, since it is larger than the sum of its proper divisors (27344795).

154139557 is a wasteful number, since it uses less digits than its factorization.

154139557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388.

The product of its digits is 94500, while the sum is 40.

The square root of 154139557 is about 12415.2952844465. The cubic root of 154139557 is about 536.1727057722.

The spelling of 154139557 in words is "one hundred fifty-four million, one hundred thirty-nine thousand, five hundred fifty-seven".