155247413 has 4 divisors (see below), whose sum is σ = 155274240. Its totient is φ = 155220588.

The previous prime is 155247377. The next prime is 155247419. The reversal of 155247413 is 314742551.

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, and also an emirpimes, since its reverse is a distinct semiprime: 314742551 = 1171 ⋅268781.

It is a cyclic number.

It is not a de Polignac number, because 155247413 - 2¹² = 155243317 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155247413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155247419) 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, 743 + ... + 17636.

It is an arithmetic number, because the mean of its divisors is an integer number (38818560).

Almost surely, 2^155247413 is an apocalyptic number.

It is an amenable number.

155247413 is a deficient number, since it is larger than the sum of its proper divisors (26827).

155247413 is an equidigital number, since it uses as much as digits as its factorization.

155247413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26826.

The product of its digits is 16800, while the sum is 32.

The square root of 155247413 is about 12459.8319812107. The cubic root of 155247413 is about 537.4541953396.

Adding to 155247413 its reverse (314742551), we get a palindrome (469989964).

The spelling of 155247413 in words is "one hundred fifty-five million, two hundred forty-seven thousand, four hundred thirteen".