115220051 has 4 divisors (see below), whose sum is σ = 115389432. Its totient is φ = 115050672.

The previous prime is 115220029. The next prime is 115220057. The reversal of 115220051 is 150022511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150022511 = 983 ⋅152617.

It is a cyclic number.

It is not a de Polignac number, because 115220051 - 2¹⁴ = 115203667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115220057) 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, 83666 + ... + 85031.

It is an arithmetic number, because the mean of its divisors is an integer number (28847358).

Almost surely, 2^115220051 is an apocalyptic number.

115220051 is a deficient number, since it is larger than the sum of its proper divisors (169381).

115220051 is an equidigital number, since it uses as much as digits as its factorization.

115220051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169380.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 115220051 is about 10734.0603221707. The cubic root of 115220051 is about 486.6043881545.

Adding to 115220051 its reverse (150022511), we get a palindrome (265242562).

The spelling of 115220051 in words is "one hundred fifteen million, two hundred twenty thousand, fifty-one".