5001217261 has 4 divisors (see below), whose sum is σ = 5039394624. Its totient is φ = 4963039900.

The previous prime is 5001217253. The next prime is 5001217271. The reversal of 5001217261 is 1627121005.

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 5001217261 - 2³ = 5001217253 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 (5001217271) 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, 19088485 + ... + 19088746.

It is an arithmetic number, because the mean of its divisors is an integer number (1259848656).

Almost surely, 2^5001217261 is an apocalyptic number.

It is an amenable number.

5001217261 is a deficient number, since it is larger than the sum of its proper divisors (38177363).

5001217261 is a wasteful number, since it uses less digits than its factorization.

5001217261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38177362.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 5001217261 is about 70719.2849299256. The cubic root of 5001217261 is about 1710.1147012193.

Adding to 5001217261 its reverse (1627121005), we get a palindrome (6628338266).

The spelling of 5001217261 in words is "five billion, one million, two hundred seventeen thousand, two hundred sixty-one".