215966054 has 4 divisors (see below), whose sum is σ = 323949084. Its totient is φ = 107983026.

The previous prime is 215966039. The next prime is 215966059. The reversal of 215966054 is 450669512.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 215965999 and 215966017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215966059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53991512 + ... + 53991515.

It is an arithmetic number, because the mean of its divisors is an integer number (80987271).

Almost surely, 2^215966054 is an apocalyptic number.

215966054 is a deficient number, since it is larger than the sum of its proper divisors (107983030).

215966054 is a wasteful number, since it uses less digits than its factorization.

215966054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107983029.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 215966054 is about 14695.7835449492. The cubic root of 215966054 is about 599.9685668718.

The spelling of 215966054 in words is "two hundred fifteen million, nine hundred sixty-six thousand, fifty-four".