145251451 has 8 divisors (see below), whose sum is σ = 156403440. Its totient is φ = 134389248.

The previous prime is 145251439. The next prime is 145251487. The reversal of 145251451 is 154152541.

145251451 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 cyclic number.

It is not a de Polignac number, because 145251451 - 2¹⁵ = 145218683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145251251) 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, 71406 + ... + 73411.

It is an arithmetic number, because the mean of its divisors is an integer number (19550430).

Almost surely, 2^145251451 is an apocalyptic number.

145251451 is a deficient number, since it is larger than the sum of its proper divisors (11151989).

145251451 is a wasteful number, since it uses less digits than its factorization.

145251451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144893.

The product of its digits is 4000, while the sum is 28.

The square root of 145251451 is about 12052.0309906671. The cubic root of 145251451 is about 525.6622946161.

The spelling of 145251451 in words is "one hundred forty-five million, two hundred fifty-one thousand, four hundred fifty-one".