145226493 has 16 divisors (see below), whose sum is σ = 215692800. Its totient is φ = 96573600.

The previous prime is 145226491. The next prime is 145226509. The reversal of 145226493 is 394622541.

It is a happy number.

145226493 is a `hidden beast` number, since 1 + 4 + 5 + 2 + 2 + 649 + 3 = 666.

It is not a de Polignac number, because 145226493 - 2¹ = 145226491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145226491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4468 + ... + 17618.

It is an arithmetic number, because the mean of its divisors is an integer number (13480800).

Almost surely, 2^145226493 is an apocalyptic number.

It is an amenable number.

145226493 is a deficient number, since it is larger than the sum of its proper divisors (70466307).

145226493 is a wasteful number, since it uses less digits than its factorization.

145226493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13569 (or 13563 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 145226493 is about 12050.9955190432. The cubic root of 145226493 is about 525.6321853792.

The spelling of 145226493 in words is "one hundred forty-five million, two hundred twenty-six thousand, four hundred ninety-three".