155611413 has 12 divisors (see below), whose sum is σ = 232023168. Its totient is φ = 100394280.

The previous prime is 155611409. The next prime is 155611429. The reversal of 155611413 is 314116551.

155611413 is a `hidden beast` number, since 1 + 5 + 5 + 611 + 41 + 3 = 666.

It is not a de Polignac number, because 155611413 - 2² = 155611409 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155611403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 278595 + ... + 279152.

It is an arithmetic number, because the mean of its divisors is an integer number (19335264).

Almost surely, 2^155611413 is an apocalyptic number.

It is an amenable number.

155611413 is a deficient number, since it is larger than the sum of its proper divisors (76411755).

155611413 is a wasteful number, since it uses less digits than its factorization.

155611413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557784 (or 557781 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 155611413 is about 12474.4303677563. The cubic root of 155611413 is about 537.8739138291.

Adding to 155611413 its reverse (314116551), we get a palindrome (469727964).

The spelling of 155611413 in words is "one hundred fifty-five million, six hundred eleven thousand, four hundred thirteen".