75071071 has 4 divisors (see below), whose sum is σ = 79022200. Its totient is φ = 71119944.

The previous prime is 75071063. The next prime is 75071089. The reversal of 75071071 is 17017057.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17017057 = 197 ⋅86381.

It is a cyclic number.

It is not a de Polignac number, because 75071071 - 2³ = 75071063 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 (75071671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1975536 + ... + 1975573.

It is an arithmetic number, because the mean of its divisors is an integer number (19755550).

Almost surely, 2^75071071 is an apocalyptic number.

75071071 is a deficient number, since it is larger than the sum of its proper divisors (3951129).

75071071 is a wasteful number, since it uses less digits than its factorization.

75071071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3951128.

The product of its (nonzero) digits is 1715, while the sum is 28.

The square root of 75071071 is about 8664.3563523207. The cubic root of 75071071 is about 421.8494986030.

The spelling of 75071071 in words is "seventy-five million, seventy-one thousand, seventy-one".