115143551 has 4 divisors (see below), whose sum is σ = 117821352. Its totient is φ = 112465752.

The previous prime is 115143547. The next prime is 115143563. The reversal of 115143551 is 155341511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115143551 - 2² = 115143547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115143551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115143571) 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, 1338836 + ... + 1338921.

It is an arithmetic number, because the mean of its divisors is an integer number (29455338).

Almost surely, 2^115143551 is an apocalyptic number.

115143551 is a deficient number, since it is larger than the sum of its proper divisors (2677801).

115143551 is an equidigital number, since it uses as much as digits as its factorization.

115143551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2677800.

The product of its digits is 1500, while the sum is 26.

The square root of 115143551 is about 10730.4963072544. The cubic root of 115143551 is about 486.4966711471.

The spelling of 115143551 in words is "one hundred fifteen million, one hundred forty-three thousand, five hundred fifty-one".