36401971 has 4 divisors (see below), whose sum is σ = 36945352. Its totient is φ = 35858592.

The previous prime is 36401957. The next prime is 36401983. The reversal of 36401971 is 17910463.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 36401971 - 2¹⁹ = 35877683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36401941) 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, 271590 + ... + 271723.

It is an arithmetic number, because the mean of its divisors is an integer number (9236338).

Almost surely, 2^36401971 is an apocalyptic number.

36401971 is a deficient number, since it is larger than the sum of its proper divisors (543381).

36401971 is an equidigital number, since it uses as much as digits as its factorization.

36401971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543380.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 36401971 is about 6033.4045944226. The cubic root of 36401971 is about 331.4171409501.

The spelling of 36401971 in words is "thirty-six million, four hundred one thousand, nine hundred seventy-one".