75521995 has 16 divisors (see below), whose sum is σ = 97128000. Its totient is φ = 56225664.

The previous prime is 75521989. The next prime is 75522001. The reversal of 75521995 is 59912557.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (75521989) and next prime (75522001).

It is a cyclic number.

It is not a de Polignac number, because 75521995 - 2³ = 75521987 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4620 + ... + 13129.

It is an arithmetic number, because the mean of its divisors is an integer number (6070500).

Almost surely, 2^75521995 is an apocalyptic number.

75521995 is a deficient number, since it is larger than the sum of its proper divisors (21606005).

75521995 is a wasteful number, since it uses less digits than its factorization.

75521995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17814.

The product of its digits is 141750, while the sum is 43.

The square root of 75521995 is about 8690.3391763498. The cubic root of 75521995 is about 422.6924441046.

The spelling of 75521995 in words is "seventy-five million, five hundred twenty-one thousand, nine hundred ninety-five".