101245545 has 20 divisors (see below), whose sum is σ = 181492740. Its totient is φ = 53997408.

The previous prime is 101245537. The next prime is 101245549. The reversal of 101245545 is 545542101.

101245545 is a `hidden beast` number, since 101 + 2 + 4 + 554 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 30735936 + 70509609 = 5544^2 + 8397^2 .

It is not a de Polignac number, because 101245545 - 2³ = 101245537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (101245549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 124590 + ... + 125399.

It is an arithmetic number, because the mean of its divisors is an integer number (9074637).

Almost surely, 2^101245545 is an apocalyptic number.

101245545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

101245545 is a deficient number, since it is larger than the sum of its proper divisors (80247195).

101245545 is an equidigital number, since it uses as much as digits as its factorization.

101245545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250006 (or 249997 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 101245545 is about 10062.0845255841. The cubic root of 101245545 is about 466.0780398813.

Adding to 101245545 its reverse (545542101), we get a palindrome (646787646).

The spelling of 101245545 in words is "one hundred one million, two hundred forty-five thousand, five hundred forty-five".