1453721055 has 32 divisors (see below), whose sum is σ = 2362687488. Its totient is φ = 763161600.

The previous prime is 1453721041. The next prime is 1453721149. The reversal of 1453721055 is 5501273541.

It is not a de Polignac number, because 1453721055 - 2⁴ = 1453721039 is a prime.

It is a super-2 number, since 2×1453721055² = 4226609811500626050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 275290 + ... + 280520.

It is an arithmetic number, because the mean of its divisors is an integer number (73833984).

Almost surely, 2^1453721055 is an apocalyptic number.

1453721055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1453721055 is a deficient number, since it is larger than the sum of its proper divisors (908966433).

1453721055 is a wasteful number, since it uses less digits than its factorization.

1453721055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5527.

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 1453721055 is about 38127.6940687475. The cubic root of 1453721055 is about 1132.8185713526.

Adding to 1453721055 its reverse (5501273541), we get a palindrome (6954994596).

The spelling of 1453721055 in words is "one billion, four hundred fifty-three million, seven hundred twenty-one thousand, fifty-five".