7503961 has 2 divisors, whose sum is σ = 7503962. Its totient is φ = 7503960.

The previous prime is 7503959. The next prime is 7503967. The reversal of 7503961 is 1693057.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6969600 + 534361 = 2640^2 + 731^2 .

It is a cyclic number.

It is not a de Polignac number, because 7503961 - 2¹ = 7503959 is a prime.

Together with 7503959, it forms a pair of twin primes.

7503961 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (7503967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3751980 + 3751981.

It is an arithmetic number, because the mean of its divisors is an integer number (3751981).

Almost surely, 2^7503961 is an apocalyptic number.

It is an amenable number.

7503961 is a deficient number, since it is larger than the sum of its proper divisors (1).

7503961 is an equidigital number, since it uses as much as digits as its factorization.

7503961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 7503961 is about 2739.3358684177. The cubic root of 7503961 is about 195.7778355288. Note that the first 3 decimals are identical.

It can be divided in two parts, 7503 and 961, that added together give a square (8464 = 92²).

The spelling of 7503961 in words is "seven million, five hundred three thousand, nine hundred sixty-one".