155501413 has 8 divisors (see below), whose sum is σ = 164219328. Its totient is φ = 146946624.

The previous prime is 155501407. The next prime is 155501443. The reversal of 155501413 is 314105551.

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-155501413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155501443) 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, 38820 + ... + 42637.

It is an arithmetic number, because the mean of its divisors is an integer number (20527416).

Almost surely, 2^155501413 is an apocalyptic number.

It is an amenable number.

155501413 is a deficient number, since it is larger than the sum of its proper divisors (8717915).

155501413 is an equidigital number, since it uses as much as digits as its factorization.

155501413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81563.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 155501413 is about 12470.0205693495. The cubic root of 155501413 is about 537.7471448984.

Adding to 155501413 its reverse (314105551), we get a palindrome (469606964).

The spelling of 155501413 in words is "one hundred fifty-five million, five hundred one thousand, four hundred thirteen".