215157141 has 10 divisors (see below), whose sum is σ = 321407702. Its totient is φ = 143438040.

The previous prime is 215157133. The next prime is 215157161. The reversal of 215157141 is 141751512.

215157141 is a `hidden beast` number, since 2 + 1 + 51 + 571 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 138156516 + 77000625 = 11754^2 + 8775^2 .

It is not a de Polignac number, because 215157141 - 2³ = 215157133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215157101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1328050 + ... + 1328211.

Almost surely, 2^215157141 is an apocalyptic number.

It is an amenable number.

215157141 is a deficient number, since it is larger than the sum of its proper divisors (106250561).

215157141 is an equidigital number, since it uses as much as digits as its factorization.

215157141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2656273 (or 2656264 counting only the distinct ones).

The product of its digits is 1400, while the sum is 27.

The square root of 215157141 is about 14668.2357834881. The cubic root of 215157141 is about 599.2185576884.

The spelling of 215157141 in words is "two hundred fifteen million, one hundred fifty-seven thousand, one hundred forty-one".