155122131 has 16 divisors (see below), whose sum is σ = 214479360. Its totient is φ = 99607200.

The previous prime is 155122129. The next prime is 155122139. The reversal of 155122131 is 131221551.

It is not a de Polignac number, because 155122131 - 2¹ = 155122129 is a prime.

It is a super-2 number, since 2×155122131² = 48125751051962322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155122098 and 155122107.

It is not an unprimeable number, because it can be changed into a prime (155122139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38356 + ... + 42206.

It is an arithmetic number, because the mean of its divisors is an integer number (13404960).

Almost surely, 2^155122131 is an apocalyptic number.

155122131 is a deficient number, since it is larger than the sum of its proper divisors (59357229).

155122131 is a wasteful number, since it uses less digits than its factorization.

155122131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4346.

The product of its digits is 300, while the sum is 21.

The square root of 155122131 is about 12454.8035311682. The cubic root of 155122131 is about 537.3095843267.

Adding to 155122131 its reverse (131221551), we get a palindrome (286343682).

The spelling of 155122131 in words is "one hundred fifty-five million, one hundred twenty-two thousand, one hundred thirty-one".