5672921 has 4 divisors (see below), whose sum is σ = 5678052. Its totient is φ = 5667792.

The previous prime is 5672879. The next prime is 5672923. The reversal of 5672921 is 1292765.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4682896 + 990025 = 2164^2 + 995^2 .

It is a cyclic number.

It is not a de Polignac number, because 5672921 - 2⁶ = 5672857 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5672923) 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, 146 + ... + 3371.

It is an arithmetic number, because the mean of its divisors is an integer number (1419513).

Almost surely, 2^5672921 is an apocalyptic number.

It is an amenable number.

5672921 is a deficient number, since it is larger than the sum of its proper divisors (5131).

5672921 is a wasteful number, since it uses less digits than its factorization.

5672921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5130.

The product of its digits is 7560, while the sum is 32.

The square root of 5672921 is about 2381.7894533313. The cubic root of 5672921 is about 178.3482744831.

The spelling of 5672921 in words is "five million, six hundred seventy-two thousand, nine hundred twenty-one".