155320413 has 8 divisors (see below), whose sum is σ = 212691168. Its totient is φ = 100748304.

The previous prime is 155320409. The next prime is 155320441. The reversal of 155320413 is 314023551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155320413 - 2² = 155320409 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155320463) 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, 699531 + ... + 699752.

It is an arithmetic number, because the mean of its divisors is an integer number (26586396).

Almost surely, 2^155320413 is an apocalyptic number.

It is an amenable number.

155320413 is a deficient number, since it is larger than the sum of its proper divisors (57370755).

155320413 is a wasteful number, since it uses less digits than its factorization.

155320413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399323.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 155320413 is about 12462.7610504254. The cubic root of 155320413 is about 537.5384222038.

Adding to 155320413 its reverse (314023551), we get a palindrome (469343964).

The spelling of 155320413 in words is "one hundred fifty-five million, three hundred twenty thousand, four hundred thirteen".