1011551061 has 16 divisors (see below), whose sum is σ = 1378886400. Its totient is φ = 659322048.

The previous prime is 1011551041. The next prime is 1011551071. The reversal of 1011551061 is 1601551101.

It is a happy number.

1011551061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1011551061 - 2⁷ = 1011550933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011551041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153135 + ... + 159603.

It is an arithmetic number, because the mean of its divisors is an integer number (86180400).

Almost surely, 2^1011551061 is an apocalyptic number.

It is an amenable number.

1011551061 is a deficient number, since it is larger than the sum of its proper divisors (367335339).

1011551061 is a wasteful number, since it uses less digits than its factorization.

1011551061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7628.

The product of its (nonzero) digits is 150, while the sum is 21.

The square root of 1011551061 is about 31804.8905201700. The cubic root of 1011551061 is about 1003.8356228541.

The spelling of 1011551061 in words is "one billion, eleven million, five hundred fifty-one thousand, sixty-one".