155660402 has 8 divisors (see below), whose sum is σ = 233722800. Its totient is φ = 77752804.

The previous prime is 155660399. The next prime is 155660423. The reversal of 155660402 is 204066551.

155660402 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36152 + ... + 40227.

It is an arithmetic number, because the mean of its divisors is an integer number (29215350).

Almost surely, 2^155660402 is an apocalyptic number.

155660402 is a deficient number, since it is larger than the sum of its proper divisors (78062398).

155660402 is a wasteful number, since it uses less digits than its factorization.

155660402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77400.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 155660402 is about 12476.3937898737. The cubic root of 155660402 is about 537.9303517215.

The spelling of 155660402 in words is "one hundred fifty-five million, six hundred sixty thousand, four hundred two".