7532021 has 4 divisors (see below), whose sum is σ = 8608032. Its totient is φ = 6456012.

The previous prime is 7532011. The next prime is 7532023. The reversal of 7532021 is 1202357.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1202357 = 13 ⋅92489.

It is a cyclic number.

It is not a de Polignac number, because 7532021 - 2⁶ = 7531957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7531984 and 7532002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7532023) 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, 537995 + ... + 538008.

It is an arithmetic number, because the mean of its divisors is an integer number (2152008).

Almost surely, 2^7532021 is an apocalyptic number.

It is an amenable number.

7532021 is a deficient number, since it is larger than the sum of its proper divisors (1076011).

7532021 is a wasteful number, since it uses less digits than its factorization.

7532021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076010.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 7532021 is about 2744.4527687683. The cubic root of 7532021 is about 196.0215598247.

Adding to 7532021 its reverse (1202357), we get a palindrome (8734378).

The spelling of 7532021 in words is "seven million, five hundred thirty-two thousand, twenty-one".