115211541 has 4 divisors (see below), whose sum is σ = 153615392. Its totient is φ = 76807692.

The previous prime is 115211539. The next prime is 115211549. The reversal of 115211541 is 145112511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 145112511 = 3 ⋅48370837.

It is not a de Polignac number, because 115211541 - 2¹ = 115211539 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 (115211549) 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, 19201921 + ... + 19201926.

It is an arithmetic number, because the mean of its divisors is an integer number (38403848).

Almost surely, 2^115211541 is an apocalyptic number.

It is an amenable number.

115211541 is a deficient number, since it is larger than the sum of its proper divisors (38403851).

115211541 is an equidigital number, since it uses as much as digits as its factorization.

115211541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38403850.

The product of its digits is 200, while the sum is 21.

The square root of 115211541 is about 10733.6639131286. The cubic root of 115211541 is about 486.5924078749.

The spelling of 115211541 in words is "one hundred fifteen million, two hundred eleven thousand, five hundred forty-one".