7237521 has 12 divisors (see below), whose sum is σ = 10652148. Its totient is φ = 4733664.

The previous prime is 7237519. The next prime is 7237523. The reversal of 7237521 is 1257327.

It is an interprime number because it is at equal distance from previous prime (7237519) and next prime (7237523).

It can be written as a sum of positive squares in 2 ways, for example, as 6051600 + 1185921 = 2460^2 + 1089^2 .

It is not a de Polignac number, because 7237521 - 2¹ = 7237519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7237523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7110 + ... + 8063.

It is an arithmetic number, because the mean of its divisors is an integer number (887679).

Almost surely, 2^7237521 is an apocalyptic number.

It is an amenable number.

7237521 is a deficient number, since it is larger than the sum of its proper divisors (3414627).

7237521 is a wasteful number, since it uses less digits than its factorization.

7237521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15232 (or 15229 counting only the distinct ones).

The product of its digits is 2940, while the sum is 27.

The square root of 7237521 is about 2690.2641134283. The cubic root of 7237521 is about 193.4327230411.

The spelling of 7237521 in words is "seven million, two hundred thirty-seven thousand, five hundred twenty-one".