71954 has 4 divisors (see below), whose sum is σ = 107934. Its totient is φ = 35976.

The previous prime is 71947. The next prime is 71963. The reversal of 71954 is 45917.

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

It can be written as a sum of positive squares in only one way, i.e., 42025 + 29929 = 205^2 + 173^2 .

It is a Curzon number.

It is a plaindrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 71954.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17987 + ... + 17990.

2⁷¹⁹⁵⁴ is an apocalyptic number.

71954 is a deficient number, since it is larger than the sum of its proper divisors (35980).

71954 is a wasteful number, since it uses less digits than its factorization.

71954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35979.

The product of its digits is 1260, while the sum is 26.

The square root of 71954 is about 268.2424276657. The cubic root of 71954 is about 41.5928149573.

The spelling of 71954 in words is "seventy-one thousand, nine hundred fifty-four".