201250440053 has 4 divisors (see below), whose sum is σ = 216731243148. Its totient is φ = 185769636960.

The previous prime is 201250440029. The next prime is 201250440089. The reversal of 201250440053 is 350044052102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 350044052102 = 2 ⋅175022026051.

It can be written as a sum of positive squares in 2 ways, for example, as 7824640849 + 193425799204 = 88457^2 + 439802^2 .

It is a cyclic number.

It is not a de Polignac number, because 201250440053 - 2¹⁰ = 201250439029 is a prime.

It is a super-2 number, since 2×201250440053² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201250440023) 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, 7740401528 + ... + 7740401553.

It is an arithmetic number, because the mean of its divisors is an integer number (54182810787).

Almost surely, 2^201250440053 is an apocalyptic number.

It is an amenable number.

201250440053 is a deficient number, since it is larger than the sum of its proper divisors (15480803095).

201250440053 is a wasteful number, since it uses less digits than its factorization.

201250440053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15480803094.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 201250440053 its reverse (350044052102), we get a palindrome (551294492155).

The spelling of 201250440053 in words is "two hundred one billion, two hundred fifty million, four hundred forty thousand, fifty-three".