155997941 has 4 divisors (see below), whose sum is σ = 170179584. Its totient is φ = 141816300.

The previous prime is 155997901. The next prime is 155997943. The reversal of 155997941 is 149799551.

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 not a de Polignac number, because 155997941 - 2¹⁰ = 155996917 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 155997941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155997943) 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, 7090805 + ... + 7090826.

It is an arithmetic number, because the mean of its divisors is an integer number (42544896).

Almost surely, 2^155997941 is an apocalyptic number.

155997941 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

155997941 is a deficient number, since it is larger than the sum of its proper divisors (14181643).

155997941 is a wasteful number, since it uses less digits than its factorization.

155997941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14181642.

The product of its digits is 510300, while the sum is 50.

The square root of 155997941 is about 12489.9135705576. The cubic root of 155997941 is about 538.3188928148.

The spelling of 155997941 in words is "one hundred fifty-five million, nine hundred ninety-seven thousand, nine hundred forty-one".