113042551 has 4 divisors (see below), whose sum is σ = 116940600. Its totient is φ = 109144504.

The previous prime is 113042521. The next prime is 113042557. The reversal of 113042551 is 155240311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155240311 = 17 ⋅9131783.

It is a cyclic number.

It is not a de Polignac number, because 113042551 - 2¹³ = 113034359 is a prime.

It is a super-3 number, since 3×113042551³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113042557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1948981 + ... + 1949038.

It is an arithmetic number, because the mean of its divisors is an integer number (29235150).

Almost surely, 2^113042551 is an apocalyptic number.

113042551 is a deficient number, since it is larger than the sum of its proper divisors (3898049).

113042551 is an equidigital number, since it uses as much as digits as its factorization.

113042551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3898048.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 113042551 is about 10632.1470550402. The cubic root of 113042551 is about 483.5194884467.

Adding to 113042551 its reverse (155240311), we get a palindrome (268282862).

It can be divided in two parts, 1130 and 42551, that added together give a square (43681 = 209²).

The spelling of 113042551 in words is "one hundred thirteen million, forty-two thousand, five hundred fifty-one".