1455561144 has 64 divisors (see below), whose sum is σ = 4050189600. Its totient is φ = 484351488.

The previous prime is 1455561119. The next prime is 1455561169. The reversal of 1455561144 is 4411655541.

1455561144 is a `hidden beast` number, since 1 + 4 + 55 + 561 + 1 + 44 = 666.

It is an interprime number because it is at equal distance from previous prime (1455561119) and next prime (1455561169).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1455561099 and 1455561108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126912 + ... + 137904.

Almost surely, 2^1455561144 is an apocalyptic number.

It is an amenable number.

1455561144 is an abundant number, since it is smaller than the sum of its proper divisors (2594628456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1455561144 is a wasteful number, since it uses less digits than its factorization.

1455561144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11621 (or 11611 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 1455561144 is about 38151.8170471604. The cubic root of 1455561144 is about 1133.2963356627.

The spelling of 1455561144 in words is "one billion, four hundred fifty-five million, five hundred sixty-one thousand, one hundred forty-four".