145455155231 has 2 divisors, whose sum is σ = 145455155232. Its totient is φ = 145455155230.

The previous prime is 145455155221. The next prime is 145455155257. The reversal of 145455155231 is 132551554541.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145455155231 is a prime.

It is a super-2 number, since 2×145455155231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145455155221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72727577615 + 72727577616.

It is an arithmetic number, because the mean of its divisors is an integer number (72727577616).

Almost surely, 2^145455155231 is an apocalyptic number.

145455155231 is a deficient number, since it is larger than the sum of its proper divisors (1).

145455155231 is an equidigital number, since it uses as much as digits as its factorization.

145455155231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 300000, while the sum is 41.

The spelling of 145455155231 in words is "one hundred forty-five billion, four hundred fifty-five million, one hundred fifty-five thousand, two hundred thirty-one".