155450131 has 2 divisors, whose sum is σ = 155450132. Its totient is φ = 155450130.

The previous prime is 155450129. The next prime is 155450137. The reversal of 155450131 is 131054551.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (131054551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155450131 - 2¹ = 155450129 is a prime.

It is a super-2 number, since 2×155450131² = 48329486455834322, which contains 22 as substring.

Together with 155450129, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 155450096 and 155450105.

It is not a weakly prime, because it can be changed into another prime (155450137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77725065 + 77725066.

It is an arithmetic number, because the mean of its divisors is an integer number (77725066).

Almost surely, 2^155450131 is an apocalyptic number.

155450131 is a deficient number, since it is larger than the sum of its proper divisors (1).

155450131 is an equidigital number, since it uses as much as digits as its factorization.

155450131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 155450131 is about 12467.9641882707. The cubic root of 155450131 is about 537.6880247902.

The spelling of 155450131 in words is "one hundred fifty-five million, four hundred fifty thousand, one hundred thirty-one".