68202551 has 2 divisors, whose sum is σ = 68202552. Its totient is φ = 68202550.

The previous prime is 68202539. The next prime is 68202559. The reversal of 68202551 is 15520286.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68202551 - 2¹⁰ = 68201527 is a prime.

It is a Sophie Germain 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 (68202559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34101275 + 34101276.

It is an arithmetic number, because the mean of its divisors is an integer number (34101276).

Almost surely, 2^68202551 is an apocalyptic number.

68202551 is a deficient number, since it is larger than the sum of its proper divisors (1).

68202551 is an equidigital number, since it uses as much as digits as its factorization.

68202551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 68202551 is about 8258.4835775099. The cubic root of 68202551 is about 408.5703748031.

The spelling of 68202551 in words is "sixty-eight million, two hundred two thousand, five hundred fifty-one".