145880091 has 24 divisors (see below), whose sum is σ = 246695904. Its totient is φ = 81325440.

The previous prime is 145880087. The next prime is 145880093. The reversal of 145880091 is 190088541.

145880091 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 145880091 - 2² = 145880087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145880093) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25656 + ... + 30821.

It is an arithmetic number, because the mean of its divisors is an integer number (10278996).

Almost surely, 2^145880091 is an apocalyptic number.

145880091 is a deficient number, since it is larger than the sum of its proper divisors (100815813).

145880091 is a wasteful number, since it uses less digits than its factorization.

145880091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56531 (or 56528 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 145880091 is about 12078.0830846621. The cubic root of 145880091 is about 526.4195486958.

The spelling of 145880091 in words is "one hundred forty-five million, eight hundred eighty thousand, ninety-one".