245527749 has 6 divisors (see below), whose sum is σ = 354651206. Its totient is φ = 163685160.

The previous prime is 245527729. The next prime is 245527769. The reversal of 245527749 is 947725542.

245527749 is a `hidden beast` number, since 24 + 552 + 7 + 74 + 9 = 666.

245527749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (245527729) and next prime (245527769).

It can be written as a sum of positive squares in only one way, i.e., 174715524 + 70812225 = 13218^2 + 8415^2 .

It is not a de Polignac number, because 245527749 - 2¹¹ = 245525701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245527729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13640422 + ... + 13640439.

Almost surely, 2^245527749 is an apocalyptic number.

It is an amenable number.

245527749 is a deficient number, since it is larger than the sum of its proper divisors (109123457).

245527749 is a wasteful number, since it uses less digits than its factorization.

245527749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27280867 (or 27280864 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 245527749 is about 15669.3250971444. The cubic root of 245527749 is about 626.1814444419.

The spelling of 245527749 in words is "two hundred forty-five million, five hundred twenty-seven thousand, seven hundred forty-nine".