1445552461 has 4 divisors (see below), whose sum is σ = 1508402592. Its totient is φ = 1382702332.

The previous prime is 1445552453. The next prime is 1445552467. The reversal of 1445552461 is 1642555441.

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: 1642555441 = 23131 ⋅71011.

It is a cyclic number.

It is not a de Polignac number, because 1445552461 - 2³ = 1445552453 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 1445552461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445552467) 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, 31425031 + ... + 31425076.

It is an arithmetic number, because the mean of its divisors is an integer number (377100648).

Almost surely, 2^1445552461 is an apocalyptic number.

It is an amenable number.

1445552461 is a deficient number, since it is larger than the sum of its proper divisors (62850131).

1445552461 is an equidigital number, since it uses as much as digits as its factorization.

1445552461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62850130.

The product of its digits is 96000, while the sum is 37.

The square root of 1445552461 is about 38020.4216310130. The cubic root of 1445552461 is about 1130.6927803418.

The spelling of 1445552461 in words is "one billion, four hundred forty-five million, five hundred fifty-two thousand, four hundred sixty-one".