155557230 has 32 divisors (see below), whose sum is σ = 382022784. Its totient is φ = 40516896.

The previous prime is 155557223. The next prime is 155557231. The reversal of 155557230 is 32755551.

It is a junction number, because it is equal to n+sod(n) for n = 155557191 and 155557200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155557231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59004 + ... + 61583.

It is an arithmetic number, because the mean of its divisors is an integer number (11938212).

Almost surely, 2^155557230 is an apocalyptic number.

155557230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155557230 is an abundant number, since it is smaller than the sum of its proper divisors (226465554).

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

155557230 is a wasteful number, since it uses less digits than its factorization.

155557230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120640.

The product of its (nonzero) digits is 26250, while the sum is 33.

The square root of 155557230 is about 12472.2584161811. The cubic root of 155557230 is about 537.8114783798.

It can be divided in two parts, 1555 and 57230, that added together give a palindrome (58785).

The spelling of 155557230 in words is "one hundred fifty-five million, five hundred fifty-seven thousand, two hundred thirty".