1081551801 has 32 divisors (see below), whose sum is σ = 1658649600. Its totient is φ = 619980480.

The previous prime is 1081551799. The next prime is 1081551803.

1081551801 is nontrivially palindromic in base 10.

1081551801 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1081551799) and next prime (1081551803).

It is not a de Polignac number, because 1081551801 - 2¹ = 1081551799 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1081551803) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 575275 + ... + 577151.

It is an arithmetic number, because the mean of its divisors is an integer number (51832800).

Almost surely, 2^1081551801 is an apocalyptic number.

1081551801 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1081551801 is a deficient number, since it is larger than the sum of its proper divisors (577097799).

1081551801 is a wasteful number, since it uses less digits than its factorization.

1081551801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2829.

The product of its (nonzero) digits is 1600, while the sum is 30.

The square root of 1081551801 is about 32886.9548757558. The cubic root of 1081551801 is about 1026.4767295766.

The spelling of 1081551801 in words is "one billion, eighty-one million, five hundred fifty-one thousand, eight hundred one".