215051145 has 16 divisors (see below), whose sum is σ = 347950080. Its totient is φ = 113404544.

The previous prime is 215051143. The next prime is 215051149. The reversal of 215051145 is 541150512.

215051145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 215051145 - 2¹ = 215051143 is a prime.

It is a super-2 number, since 2×215051145² = 92493989931622050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (215051143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79209 + ... + 81878.

It is an arithmetic number, because the mean of its divisors is an integer number (21746880).

Almost surely, 2^215051145 is an apocalyptic number.

It is an amenable number.

215051145 is a deficient number, since it is larger than the sum of its proper divisors (132898935).

215051145 is a wasteful number, since it uses less digits than its factorization.

215051145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161184.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 215051145 is about 14664.6222249330. The cubic root of 215051145 is about 599.1201409329.

The spelling of 215051145 in words is "two hundred fifteen million, fifty-one thousand, one hundred forty-five".