155761564 has 48 divisors (see below), whose sum is σ = 321753600. Its totient is φ = 64584000.

The previous prime is 155761553. The next prime is 155761579. The reversal of 155761564 is 465167551.

155761564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259737 + ... + 260335.

It is an arithmetic number, because the mean of its divisors is an integer number (6703200).

Almost surely, 2^155761564 is an apocalyptic number.

155761564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155761564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160876800).

155761564 is an abundant number, since it is smaller than the sum of its proper divisors (165992036).

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

155761564 is a wasteful number, since it uses less digits than its factorization.

155761564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898 (or 896 counting only the distinct ones).

The product of its digits is 126000, while the sum is 40.

The square root of 155761564 is about 12480.4472676263. The cubic root of 155761564 is about 538.0468581787.

The spelling of 155761564 in words is "one hundred fifty-five million, seven hundred sixty-one thousand, five hundred sixty-four".