761521 has 2 divisors, whose sum is σ = 761522. Its totient is φ = 761520.

The previous prime is 761489. The next prime is 761531. The reversal of 761521 is 125167.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 703921 + 57600 = 839^2 + 240^2 .

It is a cyclic number.

It is not a de Polignac number, because 761521 - 2⁵ = 761489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 761492 and 761501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (761531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 380760 + 380761.

It is an arithmetic number, because the mean of its divisors is an integer number (380761).

2⁷⁶¹⁵²¹ is an apocalyptic number.

It is an amenable number.

761521 is a deficient number, since it is larger than the sum of its proper divisors (1).

761521 is an equidigital number, since it uses as much as digits as its factorization.

761521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 420, while the sum is 22.

The square root of 761521 is about 872.6517060088. The cubic root of 761521 is about 91.3188908676.

Adding to 761521 its reverse (125167), we get a palindrome (886688).

The spelling of 761521 in words is "seven hundred sixty-one thousand, five hundred twenty-one".