71550423 has 12 divisors (see below), whose sum is σ = 118115088. Its totient is φ = 40885920.

The previous prime is 71550419. The next prime is 71550431. The reversal of 71550423 is 32405517.

It is a happy number.

71550423 is a `hidden beast` number, since 71 + 550 + 42 + 3 = 666.

It is not a de Polignac number, because 71550423 - 2² = 71550419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71550623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 567798 + ... + 567923.

It is an arithmetic number, because the mean of its divisors is an integer number (9842924).

Almost surely, 2^71550423 is an apocalyptic number.

71550423 is a deficient number, since it is larger than the sum of its proper divisors (46564665).

71550423 is a wasteful number, since it uses less digits than its factorization.

71550423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135734 (or 1135731 counting only the distinct ones).

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

The square root of 71550423 is about 8458.7483116594. The cubic root of 71550423 is about 415.1490692036.

The spelling of 71550423 in words is "seventy-one million, five hundred fifty thousand, four hundred twenty-three".