155291492 has 24 divisors (see below), whose sum is σ = 284020800. Its totient is φ = 74153376.

The previous prime is 155291489. The next prime is 155291501. The reversal of 155291492 is 294192551.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97559 + ... + 99137.

It is an arithmetic number, because the mean of its divisors is an integer number (11834200).

Almost surely, 2^155291492 is an apocalyptic number.

It is an amenable number.

155291492 is a deficient number, since it is larger than the sum of its proper divisors (128729308).

155291492 is a wasteful number, since it uses less digits than its factorization.

155291492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2675 (or 2673 counting only the distinct ones).

The product of its digits is 32400, while the sum is 38.

The square root of 155291492 is about 12461.6006997496. The cubic root of 155291492 is about 537.5050565236.

The spelling of 155291492 in words is "one hundred fifty-five million, two hundred ninety-one thousand, four hundred ninety-two".