68037551 has 2 divisors, whose sum is σ = 68037552. Its totient is φ = 68037550.

The previous prime is 68037517. The next prime is 68037569. The reversal of 68037551 is 15573086.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68037551 - 2¹⁴ = 68021167 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68037511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34018775 + 34018776.

It is an arithmetic number, because the mean of its divisors is an integer number (34018776).

Almost surely, 2^68037551 is an apocalyptic number.

68037551 is a deficient number, since it is larger than the sum of its proper divisors (1).

68037551 is an equidigital number, since it uses as much as digits as its factorization.

68037551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 68037551 is about 8248.4878008032. The cubic root of 68037551 is about 408.2406288321.

The spelling of 68037551 in words is "sixty-eight million, thirty-seven thousand, five hundred fifty-one".