245457102 has 64 divisors (see below), whose sum is σ = 557280000. Its totient is φ = 71393280.

The previous prime is 245457059. The next prime is 245457103. The reversal of 245457102 is 201754542.

It is a self number, because there is not a number n which added to its sum of digits gives 245457102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245457103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 491649 + ... + 492147.

It is an arithmetic number, because the mean of its divisors is an integer number (8707500).

Almost surely, 2^245457102 is an apocalyptic number.

245457102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 245457102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278640000).

245457102 is an abundant number, since it is smaller than the sum of its proper divisors (311822898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245457102 is a wasteful number, since it uses less digits than its factorization.

245457102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801.

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 245457102 is about 15667.0706259977. The cubic root of 245457102 is about 626.1213805125.

The spelling of 245457102 in words is "two hundred forty-five million, four hundred fifty-seven thousand, one hundred two".