5021651 has 4 divisors (see below), whose sum is σ = 5032872. Its totient is φ = 5010432.

The previous prime is 5021641. The next prime is 5021657. The reversal of 5021651 is 1561205.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1561205 = 5 ⋅312241.

It is a cyclic number.

It is not a de Polignac number, because 5021651 - 2⁶ = 5021587 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 (5021657) 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, 4910 + ... + 5843.

It is an arithmetic number, because the mean of its divisors is an integer number (1258218).

Almost surely, 2^5021651 is an apocalyptic number.

5021651 is a deficient number, since it is larger than the sum of its proper divisors (11221).

5021651 is a wasteful number, since it uses less digits than its factorization.

5021651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11220.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 5021651 is about 2240.9040586335. The cubic root of 5021651 is about 171.2440571934.

Adding to 5021651 its reverse (1561205), we get a palindrome (6582856).

The spelling of 5021651 in words is "five million, twenty-one thousand, six hundred fifty-one".