4561931 has 4 divisors (see below), whose sum is σ = 4976664. Its totient is φ = 4147200.

The previous prime is 4561901. The next prime is 4561937. The reversal of 4561931 is 1391654.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4561931 is a prime.

It is a super-2 number, since 2×4561931² = 41622428897522, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4561894 and 4561903.

It is not an unprimeable number, because it can be changed into a prime (4561937) 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, 207350 + ... + 207371.

It is an arithmetic number, because the mean of its divisors is an integer number (1244166).

Almost surely, 2^4561931 is an apocalyptic number.

4561931 is a deficient number, since it is larger than the sum of its proper divisors (414733).

4561931 is a wasteful number, since it uses less digits than its factorization.

4561931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414732.

The product of its digits is 3240, while the sum is 29.

The square root of 4561931 is about 2135.8677393509. The cubic root of 4561931 is about 165.8502908231.

The spelling of 4561931 in words is "four million, five hundred sixty-one thousand, nine hundred thirty-one".