122667551 has 2 divisors, whose sum is σ = 122667552. Its totient is φ = 122667550.

The previous prime is 122667547. The next prime is 122667557. The reversal of 122667551 is 155766221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122667551 - 2² = 122667547 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122667557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61333775 + 61333776.

It is an arithmetic number, because the mean of its divisors is an integer number (61333776).

Almost surely, 2^122667551 is an apocalyptic number.

122667551 is a deficient number, since it is larger than the sum of its proper divisors (1).

122667551 is an equidigital number, since it uses as much as digits as its factorization.

122667551 is an evil number, because the sum of its binary digits is even.

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

The square root of 122667551 is about 11075.5384067773. The cubic root of 122667551 is about 496.8705215951.

The spelling of 122667551 in words is "one hundred twenty-two million, six hundred sixty-seven thousand, five hundred fifty-one".