5211561 has 16 divisors (see below), whose sum is σ = 7387200. Its totient is φ = 3261888.

The previous prime is 5211541. The next prime is 5211581. The reversal of 5211561 is 1651125.

It is an interprime number because it is at equal distance from previous prime (5211541) and next prime (5211581).

It is not a de Polignac number, because 5211561 - 2⁶ = 5211497 is a prime.

5211561 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5211541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2410 + ... + 4028.

It is an arithmetic number, because the mean of its divisors is an integer number (461700).

Almost surely, 2^5211561 is an apocalyptic number.

It is an amenable number.

5211561 is a deficient number, since it is larger than the sum of its proper divisors (2175639).

5211561 is a wasteful number, since it uses less digits than its factorization.

5211561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688.

The product of its digits is 300, while the sum is 21.

The square root of 5211561 is about 2282.8843597519. The cubic root of 5211561 is about 173.3761182187.

Adding to 5211561 its reverse (1651125), we get a palindrome (6862686).

The spelling of 5211561 in words is "five million, two hundred eleven thousand, five hundred sixty-one".