75520143 has 6 divisors (see below), whose sum is σ = 109084664. Its totient is φ = 50346756.

The previous prime is 75520099. The next prime is 75520153. The reversal of 75520143 is 34102557.

It is a happy number.

It is not a de Polignac number, because 75520143 - 2¹⁴ = 75503759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75520153) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4195555 + ... + 4195572.

Almost surely, 2^75520143 is an apocalyptic number.

75520143 is a deficient number, since it is larger than the sum of its proper divisors (33564521).

75520143 is a wasteful number, since it uses less digits than its factorization.

75520143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8391133 (or 8391130 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 75520143 is about 8690.2326205919. The cubic root of 75520143 is about 422.6889888957.

The spelling of 75520143 in words is "seventy-five million, five hundred twenty thousand, one hundred forty-three".