71854157 has 8 divisors (see below), whose sum is σ = 73224480. Its totient is φ = 70490160.

The previous prime is 71854147. The next prime is 71854163. The reversal of 71854157 is 75145817.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71854157 - 2¹⁸ = 71592013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71854157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71854147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25694 + ... + 28352.

It is an arithmetic number, because the mean of its divisors is an integer number (9153060).

Almost surely, 2^71854157 is an apocalyptic number.

It is an amenable number.

71854157 is a deficient number, since it is larger than the sum of its proper divisors (1370323).

71854157 is a wasteful number, since it uses less digits than its factorization.

71854157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3163.

The product of its digits is 39200, while the sum is 38.

The square root of 71854157 is about 8476.6831366992. The cubic root of 71854157 is about 415.7356806029.

The spelling of 71854157 in words is "seventy-one million, eight hundred fifty-four thousand, one hundred fifty-seven".