122551403 has 4 divisors (see below), whose sum is σ = 131978448. Its totient is φ = 113124360.

The previous prime is 122551399. The next prime is 122551439. The reversal of 122551403 is 304155221.

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 122551403 - 2² = 122551399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122551603) 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, 4713503 + ... + 4713528.

It is an arithmetic number, because the mean of its divisors is an integer number (32994612).

Almost surely, 2^122551403 is an apocalyptic number.

122551403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

122551403 is a deficient number, since it is larger than the sum of its proper divisors (9427045).

122551403 is an equidigital number, since it uses as much as digits as its factorization.

122551403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9427044.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 122551403 is about 11070.2937178740. The cubic root of 122551403 is about 496.7136511462.

The spelling of 122551403 in words is "one hundred twenty-two million, five hundred fifty-one thousand, four hundred three".