1055581388 has 6 divisors (see below), whose sum is σ = 1847267436. Its totient is φ = 527790692.

The previous prime is 1055581381. The next prime is 1055581441. The reversal of 1055581388 is 8831855501.

It is a super-2 number, since 2×1055581388² = 2228504133384013088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1055581381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131947670 + ... + 131947677.

It is an arithmetic number, because the mean of its divisors is an integer number (307877906).

Almost surely, 2^1055581388 is an apocalyptic number.

It is an amenable number.

1055581388 is a deficient number, since it is larger than the sum of its proper divisors (791686048).

1055581388 is a wasteful number, since it uses less digits than its factorization.

1055581388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263895351 (or 263895349 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 44.

The square root of 1055581388 is about 32489.7120331960. The cubic root of 1055581388 is about 1018.1940966139.

The spelling of 1055581388 in words is "one billion, fifty-five million, five hundred eighty-one thousand, three hundred eighty-eight".