145251454 has 8 divisors (see below), whose sum is σ = 220635360. Its totient is φ = 71706336.

The previous prime is 145251439. The next prime is 145251487. The reversal of 145251454 is 454152541.

It is a happy number.

145251454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×145251454² = 42195969778228232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459499 + ... + 459814.

It is an arithmetic number, because the mean of its divisors is an integer number (27579420).

Almost surely, 2^145251454 is an apocalyptic number.

145251454 is a deficient number, since it is larger than the sum of its proper divisors (75383906).

145251454 is an equidigital number, since it uses as much as digits as its factorization.

145251454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919394.

The product of its digits is 16000, while the sum is 31.

The square root of 145251454 is about 12052.0311151274. The cubic root of 145251454 is about 525.6622982351.

The spelling of 145251454 in words is "one hundred forty-five million, two hundred fifty-one thousand, four hundred fifty-four".