68550251 has 12 divisors (see below), whose sum is σ = 86113776. Its totient is φ = 53415120.

The previous prime is 68550247. The next prime is 68550259. The reversal of 68550251 is 15205586.

It is not a de Polignac number, because 68550251 - 2² = 68550247 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (68550259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39620 + ... + 41313.

It is an arithmetic number, because the mean of its divisors is an integer number (7176148).

Almost surely, 2^68550251 is an apocalyptic number.

68550251 is a deficient number, since it is larger than the sum of its proper divisors (17563525).

68550251 is a wasteful number, since it uses less digits than its factorization.

68550251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80962 (or 80951 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 68550251 is about 8279.5078960044. The cubic root of 68550251 is about 409.2635023042.

The spelling of 68550251 in words is "sixty-eight million, five hundred fifty thousand, two hundred fifty-one".