155117141 has 4 divisors (see below), whose sum is σ = 155145312. Its totient is φ = 155088972.

The previous prime is 155117119. The next prime is 155117153. The reversal of 155117141 is 141711551.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155117141 is a prime.

It is a super-2 number, since 2×155117141² = 48122654864027762, which contains 22 as substring.

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 155117141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155117101) 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, 2825 + ... + 17838.

It is an arithmetic number, because the mean of its divisors is an integer number (38786328).

Almost surely, 2^155117141 is an apocalyptic number.

It is an amenable number.

155117141 is a deficient number, since it is larger than the sum of its proper divisors (28171).

155117141 is an equidigital number, since it uses as much as digits as its factorization.

155117141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28170.

The product of its digits is 700, while the sum is 26.

The square root of 155117141 is about 12454.6032052410. The cubic root of 155117141 is about 537.3038228372.

Adding to 155117141 its reverse (141711551), we get a palindrome (296828692).

The spelling of 155117141 in words is "one hundred fifty-five million, one hundred seventeen thousand, one hundred forty-one".