155663430 has 32 divisors (see below), whose sum is σ = 402331104. Its totient is φ = 38317056.

The previous prime is 155663419. The next prime is 155663513. The reversal of 155663430 is 34366551.

155663430 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×155663430² = 48462206878729800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155663391 and 155663400.

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 15 ways as a sum of consecutive naturals, for example, 199179 + ... + 199958.

It is an arithmetic number, because the mean of its divisors is an integer number (12572847).

Almost surely, 2^155663430 is an apocalyptic number.

155663430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155663430 is an abundant number, since it is smaller than the sum of its proper divisors (246667674).

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

155663430 is a wasteful number, since it uses less digits than its factorization.

155663430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399160.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 155663430 is about 12476.5151384511. The cubic root of 155663430 is about 537.9338397474.

The spelling of 155663430 in words is "one hundred fifty-five million, six hundred sixty-three thousand, four hundred thirty".