146445457 has 4 divisors (see below), whose sum is σ = 151169536. Its totient is φ = 141721380.

The previous prime is 146445433. The next prime is 146445479. The reversal of 146445457 is 754544641.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 754544641 = 569 ⋅1326089.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146445457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146455457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2361993 + ... + 2362054.

It is an arithmetic number, because the mean of its divisors is an integer number (37792384).

Almost surely, 2^146445457 is an apocalyptic number.

It is an amenable number.

146445457 is a deficient number, since it is larger than the sum of its proper divisors (4724079).

146445457 is an equidigital number, since it uses as much as digits as its factorization.

146445457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4724078.

The product of its digits is 268800, while the sum is 40.

The square root of 146445457 is about 12101.4650765930. The cubic root of 146445457 is about 527.0987276431.

The spelling of 146445457 in words is "one hundred forty-six million, four hundred forty-five thousand, four hundred fifty-seven".