155197716 has 24 divisors (see below), whose sum is σ = 366493344. Its totient is φ = 51108960.

The previous prime is 155197639. The next prime is 155197717. The reversal of 155197716 is 617791551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155197717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76915 + ... + 78906.

It is an arithmetic number, because the mean of its divisors is an integer number (15270556).

Almost surely, 2^155197716 is an apocalyptic number.

It is an amenable number.

155197716 is an abundant number, since it is smaller than the sum of its proper divisors (211295628).

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

155197716 is a wasteful number, since it uses less digits than its factorization.

155197716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155911 (or 155909 counting only the distinct ones).

The product of its digits is 66150, while the sum is 42.

The square root of 155197716 is about 12457.8375330552. The cubic root of 155197716 is about 537.3968401987.

The spelling of 155197716 in words is "one hundred fifty-five million, one hundred ninety-seven thousand, seven hundred sixteen".