73561271 has 4 divisors (see below), whose sum is σ = 84070032. Its totient is φ = 63052512.

The previous prime is 73561237. The next prime is 73561277. The reversal of 73561271 is 17216537.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73561271 - 2⁶ = 73561207 is a prime.

It is a super-2 number, since 2×73561271² = 10822521182270882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73561277) 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, 5254370 + ... + 5254383.

It is an arithmetic number, because the mean of its divisors is an integer number (21017508).

Almost surely, 2^73561271 is an apocalyptic number.

73561271 is a deficient number, since it is larger than the sum of its proper divisors (10508761).

73561271 is a wasteful number, since it uses less digits than its factorization.

73561271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10508760.

The product of its digits is 8820, while the sum is 32.

The square root of 73561271 is about 8576.7867526248. The cubic root of 73561271 is about 419.0023011818.

The spelling of 73561271 in words is "seventy-three million, five hundred sixty-one thousand, two hundred seventy-one".