71070155 has 32 divisors (see below), whose sum is σ = 97675200. Its totient is φ = 49254912.

The previous prime is 71070151. The next prime is 71070173. The reversal of 71070155 is 55107017.

It is a cyclic number.

It is not a de Polignac number, because 71070155 - 2² = 71070151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71070151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69236 + ... + 70254.

It is an arithmetic number, because the mean of its divisors is an integer number (3052350).

Almost surely, 2^71070155 is an apocalyptic number.

71070155 is a deficient number, since it is larger than the sum of its proper divisors (26605045).

71070155 is a wasteful number, since it uses less digits than its factorization.

71070155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103.

The product of its (nonzero) digits is 1225, while the sum is 26.

The square root of 71070155 is about 8430.3116786985. The cubic root of 71070155 is about 414.2181145860.

The spelling of 71070155 in words is "seventy-one million, seventy thousand, one hundred fifty-five".