1121563554 has 16 divisors (see below), whose sum is σ = 2256890592. Its totient is φ = 371560608.

The previous prime is 1121563519. The next prime is 1121563561. The reversal of 1121563554 is 4553651211.

It is a super-2 number, since 2×1121563554² = 2515809611322221832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 572419 + ... + 574374.

It is an arithmetic number, because the mean of its divisors is an integer number (141055662).

Almost surely, 2^1121563554 is an apocalyptic number.

1121563554 is an abundant number, since it is smaller than the sum of its proper divisors (1135327038).

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

1121563554 is a wasteful number, since it uses less digits than its factorization.

1121563554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146961.

The product of its digits is 18000, while the sum is 33.

The square root of 1121563554 is about 33489.7529701251. The cubic root of 1121563554 is about 1038.9818542896.

The spelling of 1121563554 in words is "one billion, one hundred twenty-one million, five hundred sixty-three thousand, five hundred fifty-four".