155115402 has 16 divisors (see below), whose sum is σ = 334094880. Its totient is φ = 47727792.

The previous prime is 155115379. The next prime is 155115409. The reversal of 155115402 is 204511551.

It is not an unprimeable number, because it can be changed into a prime (155115409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 994252 + ... + 994407.

It is an arithmetic number, because the mean of its divisors is an integer number (20880930).

Almost surely, 2^155115402 is an apocalyptic number.

155115402 is an abundant number, since it is smaller than the sum of its proper divisors (178979478).

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

155115402 is a wasteful number, since it uses less digits than its factorization.

155115402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988677.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 155115402 is about 12454.5333915005. The cubic root of 155115402 is about 537.3018149464.

Adding to 155115402 its reverse (204511551), we get a palindrome (359626953).

The spelling of 155115402 in words is "one hundred fifty-five million, one hundred fifteen thousand, four hundred two".