145108491 has 16 divisors (see below), whose sum is σ = 222176640. Its totient is φ = 83315520.

The previous prime is 145108463. The next prime is 145108501. The reversal of 145108491 is 194801541.

It is not a de Polignac number, because 145108491 - 2⁷ = 145108363 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (145108441) 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, 115090 + ... + 116343.

It is an arithmetic number, because the mean of its divisors is an integer number (13886040).

Almost surely, 2^145108491 is an apocalyptic number.

145108491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

145108491 is a deficient number, since it is larger than the sum of its proper divisors (77068149).

145108491 is a wasteful number, since it uses less digits than its factorization.

145108491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231466.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 145108491 is about 12046.0985800383. The cubic root of 145108491 is about 525.4897814811.

The spelling of 145108491 in words is "one hundred forty-five million, one hundred eight thousand, four hundred ninety-one".