201497743 has 6 divisors (see below), whose sum is σ = 204554616. Its totient is φ = 198485892.

The previous prime is 201497731. The next prime is 201497749. The reversal of 201497743 is 347794102.

It is not a de Polignac number, because 201497743 - 2²⁵ = 167943311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201497749) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17955 + ... + 26932.

It is an arithmetic number, because the mean of its divisors is an integer number (34092436).

Almost surely, 2^201497743 is an apocalyptic number.

201497743 is the 8978-th heptagonal number.

201497743 is a deficient number, since it is larger than the sum of its proper divisors (3056873).

201497743 is an frugal number, since it uses more digits than its factorization.

201497743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45021 (or 44954 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 201497743 is about 14194.9900669215. The cubic root of 201497743 is about 586.2597277297.

The spelling of 201497743 in words is "two hundred one million, four hundred ninety-seven thousand, seven hundred forty-three".