155001113 has 4 divisors (see below), whose sum is σ = 155034468. Its totient is φ = 154967760.

The previous prime is 155001079. The next prime is 155001127. The reversal of 155001113 is 311100551.

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 73496329 + 81504784 = 8573^2 + 9028^2 .

It is a cyclic number.

It is not a de Polignac number, because 155001113 - 2¹⁶ = 154935577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155001091 and 155001100.

It is not an unprimeable number, because it can be changed into a prime (155001013) 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, 8306 + ... + 19467.

It is an arithmetic number, because the mean of its divisors is an integer number (38758617).

Almost surely, 2^155001113 is an apocalyptic number.

It is an amenable number.

155001113 is a deficient number, since it is larger than the sum of its proper divisors (33355).

155001113 is an equidigital number, since it uses as much as digits as its factorization.

155001113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33354.

The product of its (nonzero) digits is 75, while the sum is 17.

The square root of 155001113 is about 12449.9442970641. The cubic root of 155001113 is about 537.1698212303.

Adding to 155001113 its reverse (311100551), we get a palindrome (466101664).

The spelling of 155001113 in words is "one hundred fifty-five million, one thousand, one hundred thirteen".