1112400551 has 4 divisors (see below), whose sum is σ = 1112490600. Its totient is φ = 1112310504.

The previous prime is 1112400539. The next prime is 1112400563. The reversal of 1112400551 is 1550042111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1550042111 = 953 ⋅1626487.

It is an interprime number because it is at equal distance from previous prime (1112400539) and next prime (1112400563).

It is a cyclic number.

It is not a de Polignac number, because 1112400551 - 2²² = 1108206247 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 (1112400571) 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, 22856 + ... + 52413.

It is an arithmetic number, because the mean of its divisors is an integer number (278122650).

Almost surely, 2^1112400551 is an apocalyptic number.

1112400551 is a deficient number, since it is larger than the sum of its proper divisors (90049).

1112400551 is an equidigital number, since it uses as much as digits as its factorization.

1112400551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90048.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 1112400551 is about 33352.6693234590. The cubic root of 1112400551 is about 1036.1446727172.

Adding to 1112400551 its reverse (1550042111), we get a palindrome (2662442662).

The spelling of 1112400551 in words is "one billion, one hundred twelve million, four hundred thousand, five hundred fifty-one".