71450405 has 16 divisors (see below), whose sum is σ = 97768944. Its totient is φ = 49658880.

The previous prime is 71450399. The next prime is 71450419. The reversal of 71450405 is 50405417.

It can be written as a sum of positive squares in 8 ways, for example, as 13675204 + 57775201 = 3698^2 + 7601^2 .

It is not a de Polignac number, because 71450405 - 2⁴ = 71450389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31226 + ... + 33435.

It is an arithmetic number, because the mean of its divisors is an integer number (6110559).

Almost surely, 2^71450405 is an apocalyptic number.

It is an amenable number.

71450405 is a deficient number, since it is larger than the sum of its proper divisors (26318539).

71450405 is a wasteful number, since it uses less digits than its factorization.

71450405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64696.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 71450405 is about 8452.8341400976. The cubic root of 71450405 is about 414.9555378891.

The spelling of 71450405 in words is "seventy-one million, four hundred fifty thousand, four hundred five".