71401250 has 30 divisors (see below), whose sum is σ = 134396823. Its totient is φ = 28441000.

The previous prime is 71401193. The next prime is 71401283. The reversal of 71401250 is 5210417.

It can be written as a sum of positive squares in 3 ways, for example, as 16507969 + 54893281 = 4063^2 + 7409^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5975.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 298631 + ... + 298869.

Almost surely, 2^71401250 is an apocalyptic number.

71401250 is a deficient number, since it is larger than the sum of its proper divisors (62995573).

71401250 is an frugal number, since it uses more digits than its factorization.

71401250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 71401250 is about 8449.9260351792. The cubic root of 71401250 is about 414.8603584953.

Adding to 71401250 its reverse (5210417), we get a palindrome (76611667).

The spelling of 71401250 in words is "seventy-one million, four hundred one thousand, two hundred fifty".