145153491 has 8 divisors (see below), whose sum is σ = 221186304. Its totient is φ = 82944840.

The previous prime is 145153487. The next prime is 145153513. The reversal of 145153491 is 194351541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145153491 - 2² = 145153487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145153451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3456015 + ... + 3456056.

It is an arithmetic number, because the mean of its divisors is an integer number (27648288).

Almost surely, 2^145153491 is an apocalyptic number.

145153491 is a deficient number, since it is larger than the sum of its proper divisors (76032813).

145153491 is an equidigital number, since it uses as much as digits as its factorization.

145153491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6912081.

The product of its digits is 10800, while the sum is 33.

The square root of 145153491 is about 12047.9662599129. The cubic root of 145153491 is about 525.5440962356.

The spelling of 145153491 in words is "one hundred forty-five million, one hundred fifty-three thousand, four hundred ninety-one".