71398275 has 72 divisors (see below), whose sum is σ = 131795136. Its totient is φ = 34070400.

The previous prime is 71398253. The next prime is 71398277. The reversal of 71398275 is 57289317.

It is not a de Polignac number, because 71398275 - 2¹⁰ = 71397251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71398277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 544960 + ... + 545090.

It is an arithmetic number, because the mean of its divisors is an integer number (1830488).

Almost surely, 2^71398275 is an apocalyptic number.

71398275 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

71398275 is a deficient number, since it is larger than the sum of its proper divisors (60396861).

71398275 is a wasteful number, since it uses less digits than its factorization.

71398275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 195 counting only the distinct ones).

The product of its digits is 105840, while the sum is 42.

The square root of 71398275 is about 8449.7499963017. The cubic root of 71398275 is about 414.8545965667.

The spelling of 71398275 in words is "seventy-one million, three hundred ninety-eight thousand, two hundred seventy-five".