155197804 has 12 divisors (see below), whose sum is σ = 273420000. Its totient is φ = 77077808.

The previous prime is 155197787. The next prime is 155197817. The reversal of 155197804 is 408791551.

It is a happy number.

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, 129604 + ... + 130795.

It is an arithmetic number, because the mean of its divisors is an integer number (22785000).

Almost surely, 2^155197804 is an apocalyptic number.

It is an amenable number.

155197804 is a deficient number, since it is larger than the sum of its proper divisors (118222196).

155197804 is a wasteful number, since it uses less digits than its factorization.

155197804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260552 (or 260550 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 155197804 is about 12457.8410649679. The cubic root of 155197804 is about 537.3969417700.

The spelling of 155197804 in words is "one hundred fifty-five million, one hundred ninety-seven thousand, eight hundred four".