215240054 has 8 divisors (see below), whose sum is σ = 324211680. Its totient is φ = 107169496.

The previous prime is 215240021. The next prime is 215240071. The reversal of 215240054 is 450042512.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224669 + ... + 225624.

It is an arithmetic number, because the mean of its divisors is an integer number (40526460).

Almost surely, 2^215240054 is an apocalyptic number.

215240054 is a deficient number, since it is larger than the sum of its proper divisors (108971626).

215240054 is a wasteful number, since it uses less digits than its factorization.

215240054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450534.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 215240054 is about 14671.0617884324. The cubic root of 215240054 is about 599.2955194653.

Adding to 215240054 its reverse (450042512), we get a palindrome (665282566).

The spelling of 215240054 in words is "two hundred fifteen million, two hundred forty thousand, fifty-four".