155624413 has 8 divisors (see below), whose sum is σ = 178948928. Its totient is φ = 132573024.

The previous prime is 155624407. The next prime is 155624429. The reversal of 155624413 is 314426551.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155624413 is a prime.

It is a super-3 number, since 3×155624413³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155621413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67056 + ... + 69337.

It is an arithmetic number, because the mean of its divisors is an integer number (22368616).

Almost surely, 2^155624413 is an apocalyptic number.

It is an amenable number.

155624413 is a deficient number, since it is larger than the sum of its proper divisors (23324515).

155624413 is a wasteful number, since it uses less digits than its factorization.

155624413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136563.

The product of its digits is 14400, while the sum is 31.

The square root of 155624413 is about 12474.9514227511. The cubic root of 155624413 is about 537.8888916641. Note that the first 4 decimals are identical.

The spelling of 155624413 in words is "one hundred fifty-five million, six hundred twenty-four thousand, four hundred thirteen".