155399235 has 8 divisors (see below), whose sum is σ = 248638800. Its totient is φ = 82879584.

The previous prime is 155399219. The next prime is 155399239. The reversal of 155399235 is 532993551.

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

It is not a de Polignac number, because 155399235 - 2⁴ = 155399219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155399239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5179960 + ... + 5179989.

It is an arithmetic number, because the mean of its divisors is an integer number (31079850).

Almost surely, 2^155399235 is an apocalyptic number.

155399235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155399235 is a deficient number, since it is larger than the sum of its proper divisors (93239565).

155399235 is a wasteful number, since it uses less digits than its factorization.

155399235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10359957.

The product of its digits is 182250, while the sum is 42.

The square root of 155399235 is about 12465.9229501870. The cubic root of 155399235 is about 537.6293368223.

The spelling of 155399235 in words is "one hundred fifty-five million, three hundred ninety-nine thousand, two hundred thirty-five".