545151240 has 192 divisors, whose sum is σ = 1888576560. Its totient is φ = 135905280.

The previous prime is 545151239. The next prime is 545151241. The reversal of 545151240 is 42151545.

It is an interprime number because it is at equal distance from previous prime (545151239) and next prime (545151241).

It can be written as a sum of positive squares in 8 ways, for example, as 214856964 + 330294276 = 14658^2 + 18174^2 .

It is not an unprimeable number, because it can be changed into a prime (545151241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1719562 + ... + 1719878.

Almost surely, 2^545151240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545151240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (944288280).

545151240 is an abundant number, since it is smaller than the sum of its proper divisors (1343425320).

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

545151240 is a wasteful number, since it uses less digits than its factorization.

545151240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 545151240 is about 23348.4740400738. The cubic root of 545151240 is about 816.9064681510.

It can be divided in two parts, 54515 and 1240, that added together give a palindrome (55755).

The spelling of 545151240 in words is "five hundred forty-five million, one hundred fifty-one thousand, two hundred forty".