155091408 has 40 divisors (see below), whose sum is σ = 424222848. Its totient is φ = 48655872.

The previous prime is 155091407. The next prime is 155091421. The reversal of 155091408 is 804190551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155091401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94216 + ... + 95847.

Almost surely, 2^155091408 is an apocalyptic number.

It is an amenable number.

155091408 is an abundant number, since it is smaller than the sum of its proper divisors (269131440).

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

155091408 is a wasteful number, since it uses less digits than its factorization.

155091408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190091 (or 190085 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 155091408 is about 12453.5700905403. The cubic root of 155091408 is about 537.2741093707.

The spelling of 155091408 in words is "one hundred fifty-five million, ninety-one thousand, four hundred eight".