145407451 has 12 divisors (see below), whose sum is σ = 171190152. Its totient is φ = 123129888.

The previous prime is 145407439. The next prime is 145407463. The reversal of 145407451 is 154704541.

It is an interprime number because it is at equal distance from previous prime (145407439) and next prime (145407463).

It is not a de Polignac number, because 145407451 - 2⁵ = 145407419 is a prime.

It is a super-2 number, since 2×145407451² = 42286653612634802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145407491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13810 + ... + 21943.

It is an arithmetic number, because the mean of its divisors is an integer number (14265846).

Almost surely, 2^145407451 is an apocalyptic number.

145407451 is a deficient number, since it is larger than the sum of its proper divisors (25782701).

145407451 is an equidigital number, since it uses as much as digits as its factorization.

145407451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35850 (or 35843 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 145407451 is about 12058.5011921051. The cubic root of 145407451 is about 525.8504143164.

The spelling of 145407451 in words is "one hundred forty-five million, four hundred seven thousand, four hundred fifty-one".