245002021 has 16 divisors (see below), whose sum is σ = 276553728. Its totient is φ = 215031600.

The previous prime is 245002013. The next prime is 245002027. The reversal of 245002021 is 120200542.

It is a cyclic number.

It is not a de Polignac number, because 245002021 - 2³ = 245002013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 245001986 and 245002004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245002027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252880 + ... + 253846.

It is an arithmetic number, because the mean of its divisors is an integer number (17284608).

Almost surely, 2^245002021 is an apocalyptic number.

It is an amenable number.

245002021 is a deficient number, since it is larger than the sum of its proper divisors (31551707).

245002021 is a wasteful number, since it uses less digits than its factorization.

245002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1752.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 245002021 is about 15652.5404008423. The cubic root of 245002021 is about 625.7341951143.

Adding to 245002021 its reverse (120200542), we get a palindrome (365202563).

The spelling of 245002021 in words is "two hundred forty-five million, two thousand, twenty-one".