155919072 has 48 divisors (see below), whose sum is σ = 410674320. Its totient is φ = 51796992.

The previous prime is 155919013. The next prime is 155919077. The reversal of 155919072 is 270919551.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 155919072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155919077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27454 + ... + 32642.

It is an arithmetic number, because the mean of its divisors is an integer number (8555715).

Almost surely, 2^155919072 is an apocalyptic number.

155919072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155919072 is an abundant number, since it is smaller than the sum of its proper divisors (254755248).

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

155919072 is a wasteful number, since it uses less digits than its factorization.

155919072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5515 (or 5507 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 39.

The square root of 155919072 is about 12486.7558637142. The cubic root of 155919072 is about 538.2281569381.

The spelling of 155919072 in words is "one hundred fifty-five million, nine hundred nineteen thousand, seventy-two".