75520029 has 16 divisors (see below), whose sum is σ = 109562432. Its totient is φ = 45992448.

The previous prime is 75520021. The next prime is 75520043. The reversal of 75520029 is 92002557.

It is a happy number.

It is not a de Polignac number, because 75520029 - 2³ = 75520021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75519978 and 75520005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75520021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6199 + ... + 13764.

It is an arithmetic number, because the mean of its divisors is an integer number (6847652).

Almost surely, 2^75520029 is an apocalyptic number.

It is an amenable number.

75520029 is a deficient number, since it is larger than the sum of its proper divisors (34042403).

75520029 is a wasteful number, since it uses less digits than its factorization.

75520029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20076.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 75520029 is about 8690.2260615015. The cubic root of 75520029 is about 422.6887762082.

The spelling of 75520029 in words is "seventy-five million, five hundred twenty thousand, twenty-nine".