445548653 has 4 divisors (see below), whose sum is σ = 486053088. Its totient is φ = 405044220.

The previous prime is 445548641. The next prime is 445548659. The reversal of 445548653 is 356845544.

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.

It is a cyclic number.

It is not a de Polignac number, because 445548653 - 2²⁸ = 177113197 is a prime.

It is a super-2 number, since 2×445548653² = 397027204380228818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445548659) 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, 20252201 + ... + 20252222.

It is an arithmetic number, because the mean of its divisors is an integer number (121513272).

Almost surely, 2^445548653 is an apocalyptic number.

It is an amenable number.

445548653 is a deficient number, since it is larger than the sum of its proper divisors (40504435).

445548653 is a wasteful number, since it uses less digits than its factorization.

445548653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40504434.

The product of its digits is 1152000, while the sum is 44.

The square root of 445548653 is about 21108.0234271236. The cubic root of 445548653 is about 763.7743073241.

The spelling of 445548653 in words is "four hundred forty-five million, five hundred forty-eight thousand, six hundred fifty-three".