5197861 has 4 divisors (see below), whose sum is σ = 5216512. Its totient is φ = 5179212.

The previous prime is 5197853. The next prime is 5197877. The reversal of 5197861 is 1687915.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1687915 = 5 ⋅337583.

It is a cyclic number.

It is not a de Polignac number, because 5197861 - 2³ = 5197853 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5197861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5197831) 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, 8901 + ... + 9466.

It is an arithmetic number, because the mean of its divisors is an integer number (1304128).

Almost surely, 2^5197861 is an apocalyptic number.

It is an amenable number.

5197861 is a deficient number, since it is larger than the sum of its proper divisors (18651).

5197861 is a wasteful number, since it uses less digits than its factorization.

5197861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18650.

The product of its digits is 15120, while the sum is 37.

The square root of 5197861 is about 2279.8817951815. The cubic root of 5197861 is about 173.2240628686.

The spelling of 5197861 in words is "five million, one hundred ninety-seven thousand, eight hundred sixty-one".