155402112 has 32 divisors (see below), whose sum is σ = 412787880. Its totient is φ = 51800576.

The previous prime is 155402111. The next prime is 155402131. The reversal of 155402112 is 211204551.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155402111) 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, 201963 + ... + 202730.

Almost surely, 2^155402112 is an apocalyptic number.

155402112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155402112 is an abundant number, since it is smaller than the sum of its proper divisors (257385768).

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

155402112 is an equidigital number, since it uses as much as digits as its factorization.

155402112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404710 (or 404698 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 155402112 is about 12466.0383442375. The cubic root of 155402112 is about 537.6326546208.

Adding to 155402112 its reverse (211204551), we get a palindrome (366606663).

The spelling of 155402112 in words is "one hundred fifty-five million, four hundred two thousand, one hundred twelve".