1111554541 has 4 divisors (see below), whose sum is σ = 1116822784. Its totient is φ = 1106286300.

The previous prime is 1111554533. The next prime is 1111554551. The reversal of 1111554541 is 1454551111.

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.

It is a cyclic number.

It is not a de Polignac number, because 1111554541 - 2³ = 1111554533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111554551) 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, 2633805 + ... + 2634226.

It is an arithmetic number, because the mean of its divisors is an integer number (279205696).

Almost surely, 2^1111554541 is an apocalyptic number.

It is an amenable number.

1111554541 is a deficient number, since it is larger than the sum of its proper divisors (5268243).

1111554541 is an equidigital number, since it uses as much as digits as its factorization.

1111554541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5268242.

The product of its digits is 2000, while the sum is 28.

The square root of 1111554541 is about 33339.9841181726. The cubic root of 1111554541 is about 1035.8819343026.

It can be divided in two parts, 11115 and 54541, that added together give a palindrome (65656).

The spelling of 1111554541 in words is "one billion, one hundred eleven million, five hundred fifty-four thousand, five hundred forty-one".