45100261 has 4 divisors (see below), whose sum is σ = 45135724. Its totient is φ = 45064800.

The previous prime is 45100259. The next prime is 45100267. The reversal of 45100261 is 16200154.

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 33709636 + 11390625 = 5806^2 + 3375^2 .

It is a cyclic number.

It is not a de Polignac number, because 45100261 - 2¹ = 45100259 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 (45100267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15750 + ... + 18391.

It is an arithmetic number, because the mean of its divisors is an integer number (11283931).

Almost surely, 2^45100261 is an apocalyptic number.

It is an amenable number.

45100261 is a deficient number, since it is larger than the sum of its proper divisors (35463).

45100261 is a wasteful number, since it uses less digits than its factorization.

45100261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35462.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 45100261 is about 6715.6727883363. The cubic root of 45100261 is about 355.9532957499.

The spelling of 45100261 in words is "forty-five million, one hundred thousand, two hundred sixty-one".