7251020 has 60 divisors (see below), whose sum is σ = 17881584. Its totient is φ = 2469600.

The previous prime is 7251011. The next prime is 7251031. The reversal of 7251020 is 201527.

It is a self number, because there is not a number n which added to its sum of digits gives 7251020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 47945 + ... + 48095.

Almost surely, 2^7251020 is an apocalyptic number.

7251020 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7251020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8940792).

7251020 is an abundant number, since it is smaller than the sum of its proper divisors (10630564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7251020 is a wasteful number, since it uses less digits than its factorization.

7251020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 165 counting only the distinct ones).

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

The square root of 7251020 is about 2692.7718061507. The cubic root of 7251020 is about 193.5529081441.

Adding to 7251020 its reverse (201527), we get a palindrome (7452547).

The spelling of 7251020 in words is "seven million, two hundred fifty-one thousand, twenty".