155193672 has 32 divisors (see below), whose sum is σ = 408405600. Its totient is φ = 49008384.

The previous prime is 155193667. The next prime is 155193677. The reversal of 155193672 is 276391551.

It is an interprime number because it is at equal distance from previous prime (155193667) and next prime (155193677).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 155193672.

It is not an unprimeable number, because it can be changed into a prime (155193677) 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, 169713 + ... + 170624.

It is an arithmetic number, because the mean of its divisors is an integer number (12762675).

Almost surely, 2^155193672 is an apocalyptic number.

155193672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155193672 is an abundant number, since it is smaller than the sum of its proper divisors (253211928).

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

155193672 is a wasteful number, since it uses less digits than its factorization.

155193672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340365 (or 340361 counting only the distinct ones).

The product of its digits is 56700, while the sum is 39.

The square root of 155193672 is about 12457.6752245353. The cubic root of 155193672 is about 537.3921724932.

It can be divided in two parts, 15519 and 3672, that added together give a palindrome (19191).

The spelling of 155193672 in words is "one hundred fifty-five million, one hundred ninety-three thousand, six hundred seventy-two".