155593040 has 40 divisors (see below), whose sum is σ = 362307168. Its totient is φ = 62142080.

The previous prime is 155593019. The next prime is 155593043. The reversal of 155593040 is 40395551.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 155592988 and 155593006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155593043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76679 + ... + 78681.

Almost surely, 2^155593040 is an apocalyptic number.

155593040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155593040 is an abundant number, since it is smaller than the sum of its proper divisors (206714128).

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

155593040 is a wasteful number, since it uses less digits than its factorization.

155593040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2987 (or 2981 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 155593040 is about 12473.6939196054. The cubic root of 155593040 is about 537.8527441172.

The spelling of 155593040 in words is "one hundred fifty-five million, five hundred ninety-three thousand, forty".