7509401 has 2 divisors, whose sum is σ = 7509402. Its totient is φ = 7509400.

The previous prime is 7509379. The next prime is 7509407. The reversal of 7509401 is 1049057.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6255001 + 1254400 = 2501^2 + 1120^2 .

It is an emirp because it is prime and its reverse (1049057) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7509401 - 2¹⁰ = 7508377 is a prime.

It is a super-2 number, since 2×7509401² = 112782206757602, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7509407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3754700 + 3754701.

It is an arithmetic number, because the mean of its divisors is an integer number (3754701).

Almost surely, 2^7509401 is an apocalyptic number.

It is an amenable number.

7509401 is a deficient number, since it is larger than the sum of its proper divisors (1).

7509401 is an equidigital number, since it uses as much as digits as its factorization.

7509401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 7509401 is about 2740.3286299274. The cubic root of 7509401 is about 195.8251338451.

The spelling of 7509401 in words is "seven million, five hundred nine thousand, four hundred one".