243025552501 has 4 divisors (see below), whose sum is σ = 243039465900. Its totient is φ = 243011639104.

The previous prime is 243025552463. The next prime is 243025552537. The reversal of 243025552501 is 105255520342.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21936572100 + 221088980401 = 148110^2 + 470201^2 .

It is a cyclic number.

It is not a de Polignac number, because 243025552501 - 2²⁷ = 242891334773 is a prime.

It is a super-2 number, since 2×243025552501² (a number of 24 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 (243025552571) 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, 6930466 + ... + 6965443.

It is an arithmetic number, because the mean of its divisors is an integer number (60759866475).

Almost surely, 2^243025552501 is an apocalyptic number.

It is an amenable number.

243025552501 is a deficient number, since it is larger than the sum of its proper divisors (13913399).

243025552501 is a wasteful number, since it uses less digits than its factorization.

243025552501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13913398.

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 243025552501 in words is "two hundred forty-three billion, twenty-five million, five hundred fifty-two thousand, five hundred one".