122557901 has 4 divisors (see below), whose sum is σ = 123107712. Its totient is φ = 122008092.

The previous prime is 122557891. The next prime is 122557909. The reversal of 122557901 is 109755221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122557901 - 2¹⁰ = 122556877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122557909) 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, 274571 + ... + 275016.

It is an arithmetic number, because the mean of its divisors is an integer number (30776928).

Almost surely, 2^122557901 is an apocalyptic number.

It is an amenable number.

122557901 is a deficient number, since it is larger than the sum of its proper divisors (549811).

122557901 is an equidigital number, since it uses as much as digits as its factorization.

122557901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549810.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 122557901 is about 11070.5872021316. The cubic root of 122557901 is about 496.7224300156.

The spelling of 122557901 in words is "one hundred twenty-two million, five hundred fifty-seven thousand, nine hundred one".