115621801 has 2 divisors, whose sum is σ = 115621802. Its totient is φ = 115621800.

The previous prime is 115621789. The next prime is 115621813. The reversal of 115621801 is 108126511.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (115621789) and next prime (115621813).

It can be written as a sum of positive squares in only one way, i.e., 98803600 + 16818201 = 9940^2 + 4101^2 .

It is a cyclic number.

It is not a de Polignac number, because 115621801 - 2¹¹ = 115619753 is a prime.

It is not a weakly prime, because it can be changed into another prime (115621841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57810900 + 57810901.

It is an arithmetic number, because the mean of its divisors is an integer number (57810901).

Almost surely, 2^115621801 is an apocalyptic number.

It is an amenable number.

115621801 is a deficient number, since it is larger than the sum of its proper divisors (1).

115621801 is an equidigital number, since it uses as much as digits as its factorization.

115621801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 25.

The square root of 115621801 is about 10752.7578322959. The cubic root of 115621801 is about 487.1692971688.

The spelling of 115621801 in words is "one hundred fifteen million, six hundred twenty-one thousand, eight hundred one".