5631261 has 4 divisors (see below), whose sum is σ = 7508352. Its totient is φ = 3754172.

The previous prime is 5631259. The next prime is 5631271. The reversal of 5631261 is 1621365.

5631261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5631261 - 2¹ = 5631259 is a prime.

It is a super-2 number, since 2×5631261² = 63422200900242, which contains 22 as substring.

It is a D-number.

5631261 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5631221) 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, 938541 + ... + 938546.

It is an arithmetic number, because the mean of its divisors is an integer number (1877088).

Almost surely, 2^5631261 is an apocalyptic number.

It is an amenable number.

5631261 is a deficient number, since it is larger than the sum of its proper divisors (1877091).

5631261 is a wasteful number, since it uses less digits than its factorization.

5631261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877090.

The product of its digits is 1080, while the sum is 24.

The square root of 5631261 is about 2373.0278127321. The cubic root of 5631261 is about 177.9106250809.

The spelling of 5631261 in words is "five million, six hundred thirty-one thousand, two hundred sixty-one".