245155532051 has 4 divisors (see below), whose sum is σ = 245157931512. Its totient is φ = 245153132592.

The previous prime is 245155532023. The next prime is 245155532077. The reversal of 245155532051 is 150235551542.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245155532051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245155531996 and 245155532014.

It is not an unprimeable number, because it can be changed into a prime (245155532021) 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, 1039325 + ... + 1253198.

It is an arithmetic number, because the mean of its divisors is an integer number (61289482878).

Almost surely, 2^245155532051 is an apocalyptic number.

245155532051 is a deficient number, since it is larger than the sum of its proper divisors (2399461).

245155532051 is a wasteful number, since it uses less digits than its factorization.

245155532051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399460.

The product of its (nonzero) digits is 150000, while the sum is 38.

The spelling of 245155532051 in words is "two hundred forty-five billion, one hundred fifty-five million, five hundred thirty-two thousand, fifty-one".