4996561 has 4 divisors (see below), whose sum is σ = 5036032. Its totient is φ = 4957092.

The previous prime is 4996559. The next prime is 4996573. The reversal of 4996561 is 1656994.

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 4996561 - 2¹ = 4996559 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 (4996501) 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, 19545 + ... + 19798.

It is an arithmetic number, because the mean of its divisors is an integer number (1259008).

Almost surely, 2^4996561 is an apocalyptic number.

It is an amenable number.

4996561 is a deficient number, since it is larger than the sum of its proper divisors (39471).

4996561 is a wasteful number, since it uses less digits than its factorization.

4996561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39470.

The product of its digits is 58320, while the sum is 40.

The square root of 4996561 is about 2235.2988614501. The cubic root of 4996561 is about 170.9583816275.

The spelling of 4996561 in words is "four million, nine hundred ninety-six thousand, five hundred sixty-one".