215103450 has 24 divisors (see below), whose sum is σ = 533456928. Its totient is φ = 57360880.

The previous prime is 215103409. The next prime is 215103481. The reversal of 215103450 is 54301512.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 716862 + ... + 717161.

It is an arithmetic number, because the mean of its divisors is an integer number (22227372).

Almost surely, 2^215103450 is an apocalyptic number.

215103450 is an abundant number, since it is smaller than the sum of its proper divisors (318353478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215103450 is a wasteful number, since it uses less digits than its factorization.

215103450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434038 (or 1434033 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 215103450 is about 14666.4054900988. The cubic root of 215103450 is about 599.1687099043.

Adding to 215103450 its reverse (54301512), we get a palindrome (269404962).

The spelling of 215103450 in words is "two hundred fifteen million, one hundred three thousand, four hundred fifty".