215543053 has 12 divisors (see below), whose sum is σ = 237571488. Its totient is φ = 193940760.

The previous prime is 215543033. The next prime is 215543063. The reversal of 215543053 is 350345512.

It is not a de Polignac number, because 215543053 - 2²¹ = 213445901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215543033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115776 + ... + 117622.

It is an arithmetic number, because the mean of its divisors is an integer number (19797624).

Almost surely, 2^215543053 is an apocalyptic number.

It is an amenable number.

215543053 is a deficient number, since it is larger than the sum of its proper divisors (22028435).

215543053 is a wasteful number, since it uses less digits than its factorization.

215543053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064 (or 1961 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 215543053 is about 14681.3845736702. The cubic root of 215543053 is about 599.5766022201.

Adding to 215543053 its reverse (350345512), we get a palindrome (565888565).

The spelling of 215543053 in words is "two hundred fifteen million, five hundred forty-three thousand, fifty-three".