1451555144 has 64 divisors (see below), whose sum is σ = 3066819840. Its totient is φ = 639613440.

The previous prime is 1451555143. The next prime is 1451555167. The reversal of 1451555144 is 4415551541.

It is a super-3 number, since 3×1451555144³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1451555143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196787 + ... + 204029.

It is an arithmetic number, because the mean of its divisors is an integer number (47919060).

Almost surely, 2^1451555144 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 1451555144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1533409920).

1451555144 is an abundant number, since it is smaller than the sum of its proper divisors (1615264696).

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

1451555144 is a wasteful number, since it uses less digits than its factorization.

1451555144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7350 (or 7346 counting only the distinct ones).

The product of its digits is 40000, while the sum is 35.

The square root of 1451555144 is about 38099.2800981856. The cubic root of 1451555144 is about 1132.2556931342.

The spelling of 1451555144 in words is "one billion, four hundred fifty-one million, five hundred fifty-five thousand, one hundred forty-four".