752021 has 4 divisors (see below), whose sum is σ = 756000. Its totient is φ = 748044.

The previous prime is 752009. The next prime is 752023. The reversal of 752021 is 120257.

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: 120257 = 53 ⋅2269.

It is a cyclic number.

It is not a de Polignac number, because 752021 - 2⁶ = 751957 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 (752023) 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, 1691 + ... + 2088.

It is an arithmetic number, because the mean of its divisors is an integer number (189000).

2⁷⁵²⁰²¹ is an apocalyptic number.

It is an amenable number.

752021 is a deficient number, since it is larger than the sum of its proper divisors (3979).

752021 is a wasteful number, since it uses less digits than its factorization.

752021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3978.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 752021 is about 867.1914436847. The cubic root of 752021 is about 90.9375653531.

Adding to 752021 its reverse (120257), we get a palindrome (872278).

The spelling of 752021 in words is "seven hundred fifty-two thousand, twenty-one".