208215054 has 12 divisors (see below), whose sum is σ = 451132656. Its totient is φ = 69405012.

The previous prime is 208215047. The next prime is 208215061. The reversal of 208215054 is 450512802.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (208215047) and next prime (208215061).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5783734 + ... + 5783769.

It is an arithmetic number, because the mean of its divisors is an integer number (37594388).

Almost surely, 2^208215054 is an apocalyptic number.

208215054 is an abundant number, since it is smaller than the sum of its proper divisors (242917602).

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

208215054 is a wasteful number, since it uses less digits than its factorization.

208215054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11567511 (or 11567508 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 208215054 is about 14429.6588317257. The cubic root of 208215054 is about 592.7033409853.

Adding to 208215054 its reverse (450512802), we get a palindrome (658727856).

The spelling of 208215054 in words is "two hundred eight million, two hundred fifteen thousand, fifty-four".