155400502 has 48 divisors (see below), whose sum is σ = 261711360. Its totient is φ = 69092352.

The previous prime is 155400491. The next prime is 155400517. The reversal of 155400502 is 205004551.

It is a super-3 number, since 3×155400502³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1223563 + ... + 1223689.

It is an arithmetic number, because the mean of its divisors is an integer number (5452320).

Almost surely, 2^155400502 is an apocalyptic number.

155400502 is a deficient number, since it is larger than the sum of its proper divisors (106310858).

155400502 is a wasteful number, since it uses less digits than its factorization.

155400502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 155400502 is about 12465.9737686231. The cubic root of 155400502 is about 537.6307979503.

The spelling of 155400502 in words is "one hundred fifty-five million, four hundred thousand, five hundred two".