101234545 has 4 divisors (see below), whose sum is σ = 121481460. Its totient is φ = 80987632.

The previous prime is 101234533. The next prime is 101234597. The reversal of 101234545 is 545432101.

It is a happy number.

101234545 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13024881 + 88209664 = 3609^2 + 9392^2 .

It is a cyclic number.

It is not a de Polignac number, because 101234545 - 2²³ = 92845937 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10123450 + ... + 10123459.

It is an arithmetic number, because the mean of its divisors is an integer number (30370365).

Almost surely, 2^101234545 is an apocalyptic number.

It is an amenable number.

101234545 is a deficient number, since it is larger than the sum of its proper divisors (20246915).

101234545 is an equidigital number, since it uses as much as digits as its factorization.

101234545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20246914.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 101234545 is about 10061.5379043166. The cubic root of 101234545 is about 466.0611599810.

Adding to 101234545 its reverse (545432101), we get a palindrome (646666646).

The spelling of 101234545 in words is "one hundred one million, two hundred thirty-four thousand, five hundred forty-five".