155787413 has 8 divisors (see below), whose sum is σ = 160573056. Its totient is φ = 151048800.

The previous prime is 155787407. The next prime is 155787433. The reversal of 155787413 is 314787551.

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 not a de Polignac number, because 155787413 - 2¹² = 155783317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a house number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155787433) 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, 4973 + ... + 18338.

It is an arithmetic number, because the mean of its divisors is an integer number (20071632).

Almost surely, 2^155787413 is an apocalyptic number.

It is an amenable number.

155787413 is a deficient number, since it is larger than the sum of its proper divisors (4785643).

155787413 is a wasteful number, since it uses less digits than its factorization.

155787413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23515.

The product of its digits is 117600, while the sum is 41.

The square root of 155787413 is about 12481.4828045389. The cubic root of 155787413 is about 538.0766199154.

The spelling of 155787413 in words is "one hundred fifty-five million, seven hundred eighty-seven thousand, four hundred thirteen".