155947623 has 12 divisors (see below), whose sum is σ = 225155880. Its totient is φ = 95967456.

The previous prime is 155947619. The next prime is 155947643. The reversal of 155947623 is 326749551.

155947623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155947623 - 2² = 155947619 is a prime.

It is a super-2 number, since 2×155947623² = 48639322238700258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155947643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153288 + ... + 154301.

It is an arithmetic number, because the mean of its divisors is an integer number (18762990).

Almost surely, 2^155947623 is an apocalyptic number.

155947623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

155947623 is a deficient number, since it is larger than the sum of its proper divisors (69208257).

155947623 is a wasteful number, since it uses less digits than its factorization.

155947623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307618 (or 307605 counting only the distinct ones).

The product of its digits is 226800, while the sum is 42.

The square root of 155947623 is about 12487.8990626927. The cubic root of 155947623 is about 538.2610073437.

The spelling of 155947623 in words is "one hundred fifty-five million, nine hundred forty-seven thousand, six hundred twenty-three".