155468621 has 72 divisors (see below), whose sum is σ = 225161856. Its totient is φ = 105719040.

The previous prime is 155468563. The next prime is 155468639. The reversal of 155468621 is 126864551.

It is a happy number.

It is not a de Polignac number, because 155468621 - 2¹⁴ = 155452237 is a prime.

It is a hoax number, since the sum of its digits (38) 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 (155468821) 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 71 ways as a sum of consecutive naturals, for example, 3307820 + ... + 3307866.

It is an arithmetic number, because the mean of its divisors is an integer number (3127248).

Almost surely, 2^155468621 is an apocalyptic number.

155468621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

155468621 is a deficient number, since it is larger than the sum of its proper divisors (69693235).

155468621 is a wasteful number, since it uses less digits than its factorization.

155468621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127 (or 101 counting only the distinct ones).

The product of its digits is 57600, while the sum is 38.

The square root of 155468621 is about 12468.7056665879. The cubic root of 155468621 is about 537.7093423608.

The spelling of 155468621 in words is "one hundred fifty-five million, four hundred sixty-eight thousand, six hundred twenty-one".