155121796 has 12 divisors (see below), whose sum is σ = 272885760. Its totient is φ = 77154440.

The previous prime is 155121781. The next prime is 155121803. The reversal of 155121796 is 697121551.

155121796 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100756 + ... + 102283.

It is an arithmetic number, because the mean of its divisors is an integer number (22740480).

Almost surely, 2^155121796 is an apocalyptic number.

It is an amenable number.

155121796 is a deficient number, since it is larger than the sum of its proper divisors (117763964).

155121796 is a wasteful number, since it uses less digits than its factorization.

155121796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203234 (or 203232 counting only the distinct ones).

The product of its digits is 18900, while the sum is 37.

The square root of 155121796 is about 12454.7900825345. The cubic root of 155121796 is about 537.3091975372.

The spelling of 155121796 in words is "one hundred fifty-five million, one hundred twenty-one thousand, seven hundred ninety-six".