255487400 has 96 divisors (see below), whose sum is σ = 695580480. Its totient is φ = 85440000.

The previous prime is 255487391. The next prime is 255487409. The reversal of 255487400 is 4784552.

It is an interprime number because it is at equal distance from previous prime (255487391) and next prime (255487409).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (255487409) 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, 55175 + ... + 59625.

It is an arithmetic number, because the mean of its divisors is an integer number (7245630).

Almost surely, 2^255487400 is an apocalyptic number.

255487400 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 255487400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (347790240).

255487400 is an abundant number, since it is smaller than the sum of its proper divisors (440093080).

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

255487400 is a wasteful number, since it uses less digits than its factorization.

255487400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4515 (or 4506 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 255487400 is about 15983.9732232008. The cubic root of 255487400 is about 634.5363345957.

The spelling of 255487400 in words is "two hundred fifty-five million, four hundred eighty-seven thousand, four hundred".