245212537 has 4 divisors (see below), whose sum is σ = 258118480. Its totient is φ = 232306596.

The previous prime is 245212529. The next prime is 245212543. The reversal of 245212537 is 735212542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 735212542 = 2 ⋅367606271.

It is a cyclic number.

It is not a de Polignac number, because 245212537 - 2³ = 245212529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245212499 and 245212508.

It is not an unprimeable number, because it can be changed into a prime (245212937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6452943 + ... + 6452980.

It is an arithmetic number, because the mean of its divisors is an integer number (64529620).

Almost surely, 2^245212537 is an apocalyptic number.

It is an amenable number.

245212537 is a deficient number, since it is larger than the sum of its proper divisors (12905943).

245212537 is a wasteful number, since it uses less digits than its factorization.

245212537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12905942.

The product of its digits is 16800, while the sum is 31.

The square root of 245212537 is about 15659.2636161475. The cubic root of 245212537 is about 625.9133628192.

The spelling of 245212537 in words is "two hundred forty-five million, two hundred twelve thousand, five hundred thirty-seven".