71451407 has 2 divisors, whose sum is σ = 71451408. Its totient is φ = 71451406.

The previous prime is 71451371. The next prime is 71451427. The reversal of 71451407 is 70415417.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71451407 - 2¹⁰ = 71450383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71451407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71451427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35725703 + 35725704.

It is an arithmetic number, because the mean of its divisors is an integer number (35725704).

Almost surely, 2^71451407 is an apocalyptic number.

71451407 is a deficient number, since it is larger than the sum of its proper divisors (1).

71451407 is an equidigital number, since it uses as much as digits as its factorization.

71451407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 71451407 is about 8452.8934099514. The cubic root of 71451407 is about 414.9574776193.

The spelling of 71451407 in words is "seventy-one million, four hundred fifty-one thousand, four hundred seven".