155408788 has 12 divisors (see below), whose sum is σ = 273791700. Its totient is φ = 77182592.

The previous prime is 155408783. The next prime is 155408807. The reversal of 155408788 is 887804551.

It can be written as a sum of positive squares in 2 ways, for example, as 77933584 + 77475204 = 8828^2 + 8802^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155408783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129781 + ... + 130972.

It is an arithmetic number, because the mean of its divisors is an integer number (22815975).

Almost surely, 2^155408788 is an apocalyptic number.

It is an amenable number.

155408788 is a deficient number, since it is larger than the sum of its proper divisors (118382912).

155408788 is a wasteful number, since it uses less digits than its factorization.

155408788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260906 (or 260904 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 46.

The square root of 155408788 is about 12466.3061088680. The cubic root of 155408788 is about 537.6403533240.

The spelling of 155408788 in words is "one hundred fifty-five million, four hundred eight thousand, seven hundred eighty-eight".