12345501 has 12 divisors (see below), whose sum is σ = 19148352. Its totient is φ = 7054488.

The previous prime is 12345499. The next prime is 12345511. The reversal of 12345501 is 10554321.

12345501 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12345501 - 2¹ = 12345499 is a prime.

It is a super-2 number, since 2×12345501² = 304822789882002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12345511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41845 + ... + 42138.

It is an arithmetic number, because the mean of its divisors is an integer number (1595696).

Almost surely, 2^12345501 is an apocalyptic number.

It is an amenable number.

12345501 is a deficient number, since it is larger than the sum of its proper divisors (6802851).

12345501 is an equidigital number, since it uses as much as digits as its factorization.

12345501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84000 (or 83993 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 12345501 is about 3513.6165129393. The cubic root of 12345501 is about 231.1193139364.

Adding to 12345501 its reverse (10554321), we get a palindrome (22899822).

The spelling of 12345501 in words is "twelve million, three hundred forty-five thousand, five hundred one".