154961655 has 32 divisors (see below), whose sum is σ = 253793280. Its totient is φ = 80714880.

The previous prime is 154961641. The next prime is 154961657. The reversal of 154961655 is 556169451.

It is not a de Polignac number, because 154961655 - 2⁵ = 154961623 is a prime.

It is a super-3 number, since 3×154961655³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154961657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148626 + ... + 149664.

It is an arithmetic number, because the mean of its divisors is an integer number (7931040).

Almost surely, 2^154961655 is an apocalyptic number.

154961655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

154961655 is a deficient number, since it is larger than the sum of its proper divisors (98831625).

154961655 is a wasteful number, since it uses less digits than its factorization.

154961655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271.

The product of its digits is 162000, while the sum is 42.

The square root of 154961655 is about 12448.3595304763. The cubic root of 154961655 is about 537.1242356531.

The spelling of 154961655 in words is "one hundred fifty-four million, nine hundred sixty-one thousand, six hundred fifty-five".