215446051 has 2 divisors, whose sum is σ = 215446052. Its totient is φ = 215446050.

The previous prime is 215446019. The next prime is 215446061. The reversal of 215446051 is 150644512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 215446051 - 2⁵ = 215446019 is a prime.

It is not a weakly prime, because it can be changed into another prime (215446061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107723025 + 107723026.

It is an arithmetic number, because the mean of its divisors is an integer number (107723026).

Almost surely, 2^215446051 is an apocalyptic number.

215446051 is a deficient number, since it is larger than the sum of its proper divisors (1).

215446051 is an equidigital number, since it uses as much as digits as its factorization.

215446051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 215446051 is about 14678.0806306547. The cubic root of 215446051 is about 599.4866451625.

It can be divided in two parts, 2154 and 46051, that added together give a triangular number (48205 = T₃₁₀).

The spelling of 215446051 in words is "two hundred fifteen million, four hundred forty-six thousand, fifty-one".