145015451 has 24 divisors (see below), whose sum is σ = 173571840. Its totient is φ = 120757392.

The previous prime is 145015439. The next prime is 145015463. The reversal of 145015451 is 154510541.

It is an interprime number because it is at equal distance from previous prime (145015439) and next prime (145015463).

It is not a de Polignac number, because 145015451 - 2¹⁸ = 144753307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145015451.

It is not an unprimeable number, because it can be changed into a prime (145015411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297530 + ... + 298016.

It is an arithmetic number, because the mean of its divisors is an integer number (7232160).

Almost surely, 2^145015451 is an apocalyptic number.

145015451 is a deficient number, since it is larger than the sum of its proper divisors (28556389).

145015451 is a wasteful number, since it uses less digits than its factorization.

145015451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663 (or 656 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 145015451 is about 12042.2361295567. The cubic root of 145015451 is about 525.3774470891.

Adding to 145015451 its reverse (154510541), we get a palindrome (299525992).

The spelling of 145015451 in words is "one hundred forty-five million, fifteen thousand, four hundred fifty-one".