245661100 has 36 divisors (see below), whose sum is σ = 534688000. Its totient is φ = 97968960.

The previous prime is 245661071. The next prime is 245661113. The reversal of 245661100 is 1166542.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31381 + ... + 38419.

Almost surely, 2^245661100 is an apocalyptic number.

245661100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245661100 is an abundant number, since it is smaller than the sum of its proper divisors (289026900).

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

245661100 is a wasteful number, since it uses less digits than its factorization.

245661100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7402 (or 7395 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 245661100 is about 15673.5796804687. The cubic root of 245661100 is about 626.2947877870.

The spelling of 245661100 in words is "two hundred forty-five million, six hundred sixty-one thousand, one hundred".