75521933 has 2 divisors, whose sum is σ = 75521934. Its totient is φ = 75521932.

The previous prime is 75521923. The next prime is 75521951. The reversal of 75521933 is 33912557.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56355049 + 19166884 = 7507^2 + 4378^2 .

It is a cyclic number.

It is not a de Polignac number, because 75521933 - 2⁴ = 75521917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75521893 and 75521902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75521923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37760966 + 37760967.

It is an arithmetic number, because the mean of its divisors is an integer number (37760967).

Almost surely, 2^75521933 is an apocalyptic number.

It is an amenable number.

75521933 is a deficient number, since it is larger than the sum of its proper divisors (1).

75521933 is an equidigital number, since it uses as much as digits as its factorization.

75521933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28350, while the sum is 35.

The square root of 75521933 is about 8690.3356091695. The cubic root of 75521933 is about 422.6923284344.

The spelling of 75521933 in words is "seventy-five million, five hundred twenty-one thousand, nine hundred thirty-three".