1445566 has 4 divisors (see below), whose sum is σ = 2168352. Its totient is φ = 722782.

The previous prime is 1445557. The next prime is 1445567. The reversal of 1445566 is 6655441.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1445566² = 4179322120712, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361390 + ... + 361393.

It is an arithmetic number, because the mean of its divisors is an integer number (542088).

2^1445566 is an apocalyptic number.

1445566 is a deficient number, since it is larger than the sum of its proper divisors (722786).

1445566 is an equidigital number, since it uses as much as digits as its factorization.

1445566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722785.

The product of its digits is 14400, while the sum is 31.

The square root of 1445566 is about 1202.3169299315. The cubic root of 1445566 is about 113.0696310342.

The spelling of 1445566 in words is "one million, four hundred forty-five thousand, five hundred sixty-six".