122498551 has 4 divisors (see below), whose sum is σ = 139998352. Its totient is φ = 104998752.

The previous prime is 122498543. The next prime is 122498561. The reversal of 122498551 is 155894221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 122498551 - 2³ = 122498543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122498551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122498521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8749890 + ... + 8749903.

It is an arithmetic number, because the mean of its divisors is an integer number (34999588).

Almost surely, 2^122498551 is an apocalyptic number.

122498551 is a deficient number, since it is larger than the sum of its proper divisors (17499801).

122498551 is an equidigital number, since it uses as much as digits as its factorization.

122498551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17499800.

The product of its digits is 28800, while the sum is 37.

The square root of 122498551 is about 11067.9063512482. The cubic root of 122498551 is about 496.6422359848.

The spelling of 122498551 in words is "one hundred twenty-two million, four hundred ninety-eight thousand, five hundred fifty-one".