1011251601 has 32 divisors (see below), whose sum is σ = 1516800000. Its totient is φ = 665832960.

The previous prime is 1011251539. The next prime is 1011251609. The reversal of 1011251601 is 1061521101.

It is a happy number.

1011251601 is a `hidden beast` number, since 1 + 0 + 1 + 12 + 51 + 601 = 666.

1011251601 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 1011251601 - 2¹⁹ = 1010727313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011251609) 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, 809025 + ... + 810273.

It is an arithmetic number, because the mean of its divisors is an integer number (47400000).

Almost surely, 2^1011251601 is an apocalyptic number.

It is an amenable number.

1011251601 is a deficient number, since it is larger than the sum of its proper divisors (505548399).

1011251601 is a wasteful number, since it uses less digits than its factorization.

1011251601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606 (or 1600 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 18.

The square root of 1011251601 is about 31800.1824051372. The cubic root of 1011251601 is about 1003.7365544379.

Adding to 1011251601 its reverse (1061521101), we get a palindrome (2072772702).

The spelling of 1011251601 in words is "one billion, eleven million, two hundred fifty-one thousand, six hundred one".