122557645 has 8 divisors (see below), whose sum is σ = 168079104. Its totient is φ = 84039504.

The previous prime is 122557637. The next prime is 122557649. The reversal of 122557645 is 546755221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122557645 - 2³ = 122557637 is a prime.

It is a super-3 number, since 3×122557645³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122557649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1750789 + ... + 1750858.

It is an arithmetic number, because the mean of its divisors is an integer number (21009888).

Almost surely, 2^122557645 is an apocalyptic number.

It is an amenable number.

122557645 is a deficient number, since it is larger than the sum of its proper divisors (45521459).

122557645 is an equidigital number, since it uses as much as digits as its factorization.

122557645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501659.

The product of its digits is 84000, while the sum is 37.

The square root of 122557645 is about 11070.5756399566. The cubic root of 122557645 is about 496.7220841626.

It can be divided in two parts, 12255 and 7645, that added together give a triangular number (19900 = T₁₉₉).

The spelling of 122557645 in words is "one hundred twenty-two million, five hundred fifty-seven thousand, six hundred forty-five".