215013454 has 4 divisors (see below), whose sum is σ = 322520184. Its totient is φ = 107506726.

The previous prime is 215013451. The next prime is 215013457. The reversal of 215013454 is 454310512.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (215013451) and next prime (215013457).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215013451) 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 as a sum of consecutive naturals, namely, 53753362 + ... + 53753365.

It is an arithmetic number, because the mean of its divisors is an integer number (80630046).

Almost surely, 2^215013454 is an apocalyptic number.

215013454 is a deficient number, since it is larger than the sum of its proper divisors (107506730).

215013454 is a wasteful number, since it uses less digits than its factorization.

215013454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107506729.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 215013454 is about 14663.3370690304. The cubic root of 215013454 is about 599.0851372340.

Adding to 215013454 its reverse (454310512), we get a palindrome (669323966).

The spelling of 215013454 in words is "two hundred fifteen million, thirteen thousand, four hundred fifty-four".