71851050 has 120 divisors (see below), whose sum is σ = 202689036. Its totient is φ = 18869760.

The previous prime is 71851037. The next prime is 71851051. The reversal of 71851050 is 5015817.

It can be written as a sum of positive squares in 6 ways, for example, as 3143529 + 68707521 = 1773^2 + 8289^2 .

It is a super-2 number, since 2×71851050² = 10325146772205000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (71851051) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 457572 + ... + 457728.

Almost surely, 2^71851050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71851050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101344518).

71851050 is an abundant number, since it is smaller than the sum of its proper divisors (130837986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71851050 is a wasteful number, since it uses less digits than its factorization.

71851050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 27.

The square root of 71851050 is about 8476.4998672801. The cubic root of 71851050 is about 415.7296883290.

Adding to 71851050 its reverse (5015817), we get a palindrome (76866867).

The spelling of 71851050 in words is "seventy-one million, eight hundred fifty-one thousand, fifty".