155223036 has 18 divisors (see below), whose sum is σ = 392369432. Its totient is φ = 51741000.

The previous prime is 155223023. The next prime is 155223037. The reversal of 155223036 is 630322551.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155223037) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2155840 + ... + 2155911.

Almost surely, 2^155223036 is an apocalyptic number.

It is an amenable number.

155223036 is an abundant number, since it is smaller than the sum of its proper divisors (237146396).

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

155223036 is a wasteful number, since it uses less digits than its factorization.

155223036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4311761 (or 4311756 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 155223036 is about 12458.8537193435. The cubic root of 155223036 is about 537.4260634554.

Adding to 155223036 its reverse (630322551), we get a palindrome (785545587).

The spelling of 155223036 in words is "one hundred fifty-five million, two hundred twenty-three thousand, thirty-six".