245444537 has 16 divisors (see below), whose sum is σ = 271146960. Its totient is φ = 220776192.

The previous prime is 245444533. The next prime is 245444539. The reversal of 245444537 is 735444542.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 51566761 + 193877776 = 7181^2 + 13924^2 .

It is not a de Polignac number, because 245444537 - 2² = 245444533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245444537.

It is not an unprimeable number, because it can be changed into a prime (245444531) 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, 107039 + ... + 109307.

It is an arithmetic number, because the mean of its divisors is an integer number (16946685).

Almost surely, 2^245444537 is an apocalyptic number.

It is an amenable number.

245444537 is a deficient number, since it is larger than the sum of its proper divisors (25702423).

245444537 is a wasteful number, since it uses less digits than its factorization.

245444537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492.

The product of its digits is 268800, while the sum is 38.

The square root of 245444537 is about 15666.6696205671. The cubic root of 245444537 is about 626.1106965691.

The spelling of 245444537 in words is "two hundred forty-five million, four hundred forty-four thousand, five hundred thirty-seven".