5061981 has 4 divisors (see below), whose sum is σ = 6749312. Its totient is φ = 3374652.

The previous prime is 5061949. The next prime is 5061989. The reversal of 5061981 is 1891605.

It is a happy number.

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 not a de Polignac number, because 5061981 - 2⁵ = 5061949 is a prime.

It is a super-2 number, since 2×5061981² = 51247303288722, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5061989) 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, 843661 + ... + 843666.

It is an arithmetic number, because the mean of its divisors is an integer number (1687328).

Almost surely, 2^5061981 is an apocalyptic number.

It is an amenable number.

5061981 is a deficient number, since it is larger than the sum of its proper divisors (1687331).

5061981 is a wasteful number, since it uses less digits than its factorization.

5061981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687330.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 5061981 is about 2249.8846637106. The cubic root of 5061981 is about 171.7012684621.

The spelling of 5061981 in words is "five million, sixty-one thousand, nine hundred eighty-one".