155511413 has 4 divisors (see below), whose sum is σ = 155981568. Its totient is φ = 155041260.

The previous prime is 155511403. The next prime is 155511439. The reversal of 155511413 is 314115551.

155511413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 155511413 - 2⁴ = 155511397 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 (155511403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234581 + ... + 235242.

It is an arithmetic number, because the mean of its divisors is an integer number (38995392).

Almost surely, 2^155511413 is an apocalyptic number.

It is an amenable number.

155511413 is a deficient number, since it is larger than the sum of its proper divisors (470155).

155511413 is an equidigital number, since it uses as much as digits as its factorization.

155511413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470154.

The product of its digits is 1500, while the sum is 26.

The square root of 155511413 is about 12470.4215245516. The cubic root of 155511413 is about 537.7586718166.

Adding to 155511413 its reverse (314115551), we get a palindrome (469626964).

The spelling of 155511413 in words is "one hundred fifty-five million, five hundred eleven thousand, four hundred thirteen".