71477401 has 4 divisors (see below), whose sum is σ = 75681972. Its totient is φ = 67272832.

The previous prime is 71477389. The next prime is 71477407. The reversal of 71477401 is 10477417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10477417 = 19 ⋅551443.

It can be written as a sum of positive squares in 2 ways, for example, as 30261001 + 41216400 = 5501^2 + 6420^2 .

It is a cyclic number.

It is not a de Polignac number, because 71477401 - 2⁵ = 71477369 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71477407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2102260 + ... + 2102293.

It is an arithmetic number, because the mean of its divisors is an integer number (18920493).

Almost surely, 2^71477401 is an apocalyptic number.

It is an amenable number.

71477401 is a deficient number, since it is larger than the sum of its proper divisors (4204571).

71477401 is a wasteful number, since it uses less digits than its factorization.

71477401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4204570.

The product of its (nonzero) digits is 5488, while the sum is 31.

The square root of 71477401 is about 8454.4308501519. The cubic root of 71477401 is about 415.0077919861.

The spelling of 71477401 in words is "seventy-one million, four hundred seventy-seven thousand, four hundred one".