1545544455 has 128 divisors (see below), whose sum is σ = 3344302080. Its totient is φ = 590768640.

The previous prime is 1545544367. The next prime is 1545544499. The reversal of 1545544455 is 5544455451.

It is a happy number.

It is not a de Polignac number, because 1545544455 - 2⁸ = 1545544199 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 595210 + ... + 597800.

It is an arithmetic number, because the mean of its divisors is an integer number (26127360).

Almost surely, 2^1545544455 is an apocalyptic number.

1545544455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1545544455 is an abundant number, since it is smaller than the sum of its proper divisors (1798757625).

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

1545544455 is a wasteful number, since it uses less digits than its factorization.

1545544455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2661.

The product of its digits is 800000, while the sum is 42.

The square root of 1545544455 is about 39313.4131690445. The cubic root of 1545544455 is about 1156.1845645754.

The spelling of 1545544455 in words is "one billion, five hundred forty-five million, five hundred forty-four thousand, four hundred fifty-five".