71020153 has 4 divisors (see below), whose sum is σ = 71083008. Its totient is φ = 70957300.

The previous prime is 71020141. The next prime is 71020171. The reversal of 71020153 is 35102017.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71020153 - 2⁵ = 71020121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71020153.

It is not an unprimeable number, because it can be changed into a prime (71020123) 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, 29701 + ... + 32002.

It is an arithmetic number, because the mean of its divisors is an integer number (17770752).

Almost surely, 2^71020153 is an apocalyptic number.

It is an amenable number.

71020153 is a deficient number, since it is larger than the sum of its proper divisors (62855).

71020153 is a wasteful number, since it uses less digits than its factorization.

71020153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62854.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 71020153 is about 8427.3455488665. The cubic root of 71020153 is about 414.1209495929.

The spelling of 71020153 in words is "seventy-one million, twenty thousand, one hundred fifty-three".