1055111321502 has 48 divisors (see below), whose sum is σ = 2612994465120. Its totient is φ = 301421393856.

The previous prime is 1055111321497. The next prime is 1055111321519. The reversal of 1055111321502 is 2051231115501.

It is a happy number.

1055111321502 is a `hidden beast` number, since 1 + 0 + 5 + 511 + 132 + 15 + 0 + 2 = 666.

It is a super-2 number, since 2×1055111321502² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 443868 + ... + 1518960.

It is an arithmetic number, because the mean of its divisors is an integer number (54437384690).

Almost surely, 2^{1055111321502} is an apocalyptic number.

1055111321502 is an abundant number, since it is smaller than the sum of its proper divisors (1557883143618).

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

1055111321502 is a wasteful number, since it uses less digits than its factorization.

1055111321502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082897 (or 1082894 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 27.

The spelling of 1055111321502 in words is "one trillion, fifty-five billion, one hundred eleven million, three hundred twenty-one thousand, five hundred two".