71025450 has 24 divisors (see below), whose sum is σ = 176143488. Its totient is φ = 18940080.

The previous prime is 71025443. The next prime is 71025467. The reversal of 71025450 is 5452017.

It is a super-2 number, since 2×71025450² = 10089229095405000, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 71025450.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 236602 + ... + 236901.

It is an arithmetic number, because the mean of its divisors is an integer number (7339312).

Almost surely, 2^71025450 is an apocalyptic number.

71025450 is an abundant number, since it is smaller than the sum of its proper divisors (105118038).

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

71025450 is a wasteful number, since it uses less digits than its factorization.

71025450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473518 (or 473513 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 71025450 is about 8427.6598175294. The cubic root of 71025450 is about 414.1312449998.

Adding to 71025450 its reverse (5452017), we get a palindrome (76477467).

The spelling of 71025450 in words is "seventy-one million, twenty-five thousand, four hundred fifty".