1011051552 has 96 divisors (see below), whose sum is σ = 3069868032. Its totient is φ = 285375744.

The previous prime is 1011051527. The next prime is 1011051589. The reversal of 1011051552 is 2551501101.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46713 + ... + 64839.

It is an arithmetic number, because the mean of its divisors is an integer number (31977792).

Almost surely, 2^1011051552 is an apocalyptic number.

1011051552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011051552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1534934016).

1011051552 is an abundant number, since it is smaller than the sum of its proper divisors (2058816480).

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

1011051552 is a wasteful number, since it uses less digits than its factorization.

1011051552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18230 (or 18222 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 21.

The square root of 1011051552 is about 31797.0368430771. The cubic root of 1011051552 is about 1003.6703626230.

Adding to 1011051552 its reverse (2551501101), we get a palindrome (3562552653).

The spelling of 1011051552 in words is "one billion, eleven million, fifty-one thousand, five hundred fifty-two".