123245551 has 8 divisors (see below), whose sum is σ = 144792144. Its totient is φ = 103422720.

The previous prime is 123245543. The next prime is 123245567. The reversal of 123245551 is 155542321.

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 123245551 - 2³ = 123245543 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 (123245051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430786 + ... + 431071.

It is an arithmetic number, because the mean of its divisors is an integer number (18099018).

Almost surely, 2^123245551 is an apocalyptic number.

123245551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123245551 is a deficient number, since it is larger than the sum of its proper divisors (21546593).

123245551 is a wasteful number, since it uses less digits than its factorization.

123245551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861881.

The product of its digits is 6000, while the sum is 28.

The square root of 123245551 is about 11101.6012808964. The cubic root of 123245551 is about 497.6497041963.

Adding to 123245551 its reverse (155542321), we get a palindrome (278787872).

The spelling of 123245551 in words is "one hundred twenty-three million, two hundred forty-five thousand, five hundred fifty-one".