245155300 has 72 divisors (see below), whose sum is σ = 606664296. Its totient is φ = 85186560.

The previous prime is 245155289. The next prime is 245155307. The reversal of 245155300 is 3551542.

It can be written as a sum of positive squares in 12 ways, for example, as 37161216 + 207994084 = 6096^2 + 14422^2 .

It is a super-2 number, since 2×245155300² = 120202242236180000, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (245155307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16554 + ... + 27646.

It is an arithmetic number, because the mean of its divisors is an integer number (8425893).

Almost surely, 2^245155300 is an apocalyptic number.

245155300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245155300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303332148).

245155300 is an abundant number, since it is smaller than the sum of its proper divisors (361508996).

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

245155300 is a wasteful number, since it uses less digits than its factorization.

245155300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11137 (or 11130 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 245155300 is about 15657.4359331277. The cubic root of 245155300 is about 625.8646592314.

The spelling of 245155300 in words is "two hundred forty-five million, one hundred fifty-five thousand, three hundred".