1011552405 has 16 divisors (see below), whose sum is σ = 1620233664. Its totient is φ = 538911360.

The previous prime is 1011552403. The next prime is 1011552499. The reversal of 1011552405 is 5042551101.

It is not a de Polignac number, because 1011552405 - 2¹ = 1011552403 is a prime.

It is a super-2 number, since 2×1011552405² = 2046476536122568050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011552403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21931 + ... + 50040.

It is an arithmetic number, because the mean of its divisors is an integer number (101264604).

Almost surely, 2^1011552405 is an apocalyptic number.

1011552405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1011552405 is a deficient number, since it is larger than the sum of its proper divisors (608681259).

1011552405 is an equidigital number, since it uses as much as digits as its factorization.

1011552405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72916.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 1011552405 is about 31804.9116489891. The cubic root of 1011552405 is about 1003.8360674368.

The spelling of 1011552405 in words is "one billion, eleven million, five hundred fifty-two thousand, four hundred five".