155461554 has 24 divisors (see below), whose sum is σ = 351479232. Its totient is φ = 49567320.

The previous prime is 155461517. The next prime is 155461639. The reversal of 155461554 is 455164551.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187342 + ... + 188169.

It is an arithmetic number, because the mean of its divisors is an integer number (14644968).

Almost surely, 2^155461554 is an apocalyptic number.

155461554 is an abundant number, since it is smaller than the sum of its proper divisors (196017678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155461554 is a wasteful number, since it uses less digits than its factorization.

155461554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375542 (or 375539 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

The square root of 155461554 is about 12468.4222738885. The cubic root of 155461554 is about 537.7011948442.

It can be divided in two parts, 15 and 5461554, that added together give a square (5461569 = 2337²).

The spelling of 155461554 in words is "one hundred fifty-five million, four hundred sixty-one thousand, five hundred fifty-four".