71538051 has 8 divisors (see below), whose sum is σ = 102721360. Its totient is φ = 44023392.

The previous prime is 71538017. The next prime is 71538107. The reversal of 71538051 is 15083517.

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

It is not a de Polignac number, because 71538051 - 2¹³ = 71529859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71538451) 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 7 ways as a sum of consecutive naturals, for example, 917116 + ... + 917193.

It is an arithmetic number, because the mean of its divisors is an integer number (12840170).

Almost surely, 2^71538051 is an apocalyptic number.

71538051 is a deficient number, since it is larger than the sum of its proper divisors (31183309).

71538051 is a wasteful number, since it uses less digits than its factorization.

71538051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834325.

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 71538051 is about 8458.0169661688. The cubic root of 71538051 is about 415.1251395973.

The spelling of 71538051 in words is "seventy-one million, five hundred thirty-eight thousand, fifty-one".