11542861 has 8 divisors (see below), whose sum is σ = 13255200. Its totient is φ = 9941040.

The previous prime is 11542859. The next prime is 11542879. The reversal of 11542861 is 16824511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11542861 - 2¹ = 11542859 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 (11542801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27406 + ... + 27823.

It is an arithmetic number, because the mean of its divisors is an integer number (1656900).

Almost surely, 2^11542861 is an apocalyptic number.

11542861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11542861 is a deficient number, since it is larger than the sum of its proper divisors (1712339).

11542861 is a wasteful number, since it uses less digits than its factorization.

11542861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55259.

The product of its digits is 1920, while the sum is 28.

The square root of 11542861 is about 3397.4786239210. The cubic root of 11542861 is about 225.9979442213.

It can be divided in two parts, 11542 and 861, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 11542861 in words is "eleven million, five hundred forty-two thousand, eight hundred sixty-one".