155415413 has 4 divisors (see below), whose sum is σ = 155451660. Its totient is φ = 155379168.

The previous prime is 155415409. The next prime is 155415419. The reversal of 155415413 is 314514551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59336209 + 96079204 = 7703^2 + 9802^2 .

It is a cyclic number.

It is not a de Polignac number, because 155415413 - 2² = 155415409 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 (155415419) 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, 10670 + ... + 20607.

It is an arithmetic number, because the mean of its divisors is an integer number (38862915).

Almost surely, 2^155415413 is an apocalyptic number.

It is an amenable number.

155415413 is a deficient number, since it is larger than the sum of its proper divisors (36247).

155415413 is an equidigital number, since it uses as much as digits as its factorization.

155415413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36246.

The product of its digits is 6000, while the sum is 29.

The square root of 155415413 is about 12466.5718222774. The cubic root of 155415413 is about 537.6479929965.

Adding to 155415413 its reverse (314514551), we get a palindrome (469929964).

The spelling of 155415413 in words is "one hundred fifty-five million, four hundred fifteen thousand, four hundred thirteen".