1445011755 has 48 divisors (see below), whose sum is σ = 2548433664. Its totient is φ = 693375360.

The previous prime is 1445011721. The next prime is 1445011759. The reversal of 1445011755 is 5571105441.

It is not a de Polignac number, because 1445011755 - 2⁷ = 1445011627 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445011759) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6309981 + ... + 6310209.

It is an arithmetic number, because the mean of its divisors is an integer number (53092368).

Almost surely, 2^1445011755 is an apocalyptic number.

1445011755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1445011755 is a deficient number, since it is larger than the sum of its proper divisors (1103421909).

1445011755 is a wasteful number, since it uses less digits than its factorization.

1445011755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 33.

The square root of 1445011755 is about 38013.3102347059. The cubic root of 1445011755 is about 1130.5517849714.

The spelling of 1445011755 in words is "one billion, four hundred forty-five million, eleven thousand, seven hundred fifty-five".