1055021523440 has 60 divisors (see below), whose sum is σ = 2500080416904. Its totient is φ = 414046094592.

The previous prime is 1055021523431. The next prime is 1055021523463. The reversal of 1055021523440 is 443251205501.

It is a super-2 number, since 2×1055021523440² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1055021523397 and 1055021523406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2122694 + ... + 2572133.

Almost surely, 2^{1055021523440} is an apocalyptic number.

1055021523440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1055021523440 is an abundant number, since it is smaller than the sum of its proper divisors (1445058893464).

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

1055021523440 is an equidigital number, since it uses as much as digits as its factorization.

1055021523440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4694946 (or 4694887 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 1055021523440 its reverse (443251205501), we get a palindrome (1498272728941).

The spelling of 1055021523440 in words is "one trillion, fifty-five billion, twenty-one million, five hundred twenty-three thousand, four hundred forty".