107221545 has 12 divisors (see below), whose sum is σ = 185850756. Its totient is φ = 57184800.

The previous prime is 107221531. The next prime is 107221547. The reversal of 107221545 is 545122701.

It can be written as a sum of positive squares in 2 ways, for example, as 21455424 + 85766121 = 4632^2 + 9261^2 .

It is not a de Polignac number, because 107221545 - 2⁶ = 107221481 is a prime.

It is a super-2 number, since 2×107221545² = 22992919424374050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (107221547) 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, 1191306 + ... + 1191395.

It is an arithmetic number, because the mean of its divisors is an integer number (15487563).

Almost surely, 2^107221545 is an apocalyptic number.

107221545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

107221545 is a deficient number, since it is larger than the sum of its proper divisors (78629211).

107221545 is a wasteful number, since it uses less digits than its factorization.

107221545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382712 (or 2382709 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 107221545 is about 10354.7836771224. The cubic root of 107221545 is about 475.0733700146.

The spelling of 107221545 in words is "one hundred seven million, two hundred twenty-one thousand, five hundred forty-five".