5250661 has 6 divisors (see below), whose sum is σ = 5685810. Its totient is φ = 4846608.

The previous prime is 5250659. The next prime is 5250673. The reversal of 5250661 is 1660525.

5250661 is an esthetic number in base 5, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 3 ways, for example, as 6561 + 5244100 = 81^2 + 2290^2 .

It is not a de Polignac number, because 5250661 - 2¹ = 5250659 is a prime.

5250661 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5250691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15366 + ... + 15703.

It is an arithmetic number, because the mean of its divisors is an integer number (947635).

Almost surely, 2^5250661 is an apocalyptic number.

It is an amenable number.

5250661 is a deficient number, since it is larger than the sum of its proper divisors (435149).

5250661 is a wasteful number, since it uses less digits than its factorization.

5250661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31095 (or 31082 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 5250661 is about 2291.4320849635. The cubic root of 5250661 is about 173.8086260767.

The spelling of 5250661 in words is "five million, two hundred fifty thousand, six hundred sixty-one".