145055331 has 12 divisors (see below), whose sum is σ = 209888952. Its totient is φ = 96535296.

The previous prime is 145055327. The next prime is 145055341. The reversal of 145055331 is 133550541.

145055331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145055331 - 2² = 145055327 is a prime.

It is a super-2 number, since 2×145055331² = 42082098103039122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145055295 and 145055304.

It is not an unprimeable number, because it can be changed into a prime (145055311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8446 + ... + 19011.

It is an arithmetic number, because the mean of its divisors is an integer number (17490746).

Almost surely, 2^145055331 is an apocalyptic number.

145055331 is a deficient number, since it is larger than the sum of its proper divisors (64833621).

145055331 is a wasteful number, since it uses less digits than its factorization.

145055331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28050 (or 28047 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 145055331 is about 12043.8918543800. The cubic root of 145055331 is about 525.4256031812.

The spelling of 145055331 in words is "one hundred forty-five million, fifty-five thousand, three hundred thirty-one".