154535563 has 20 divisors (see below), whose sum is σ = 194187728. Its totient is φ = 122245200.

The previous prime is 154535561. The next prime is 154535581. The reversal of 154535563 is 365535451.

It is not a de Polignac number, because 154535563 - 2¹ = 154535561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (154535561) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28738 + ... + 33688.

Almost surely, 2^154535563 is an apocalyptic number.

154535563 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

154535563 is a deficient number, since it is larger than the sum of its proper divisors (39652165).

154535563 is an frugal number, since it uses more digits than its factorization.

154535563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4992 (or 4971 counting only the distinct ones).

The product of its digits is 135000, while the sum is 37.

The square root of 154535563 is about 12431.2333660019. The cubic root of 154535563 is about 536.6314805749.

The spelling of 154535563 in words is "one hundred fifty-four million, five hundred thirty-five thousand, five hundred sixty-three".