1061155601 has 12 divisors (see below), whose sum is σ = 1167331956. Its totient is φ = 963911520.

The previous prime is 1061155553. The next prime is 1061155603. The reversal of 1061155601 is 1065511601.

It can be written as a sum of positive squares in 2 ways, for example, as 631215376 + 429940225 = 25124^2 + 20735^2 .

It is not a de Polignac number, because 1061155601 - 2¹⁴ = 1061139217 is a prime.

It is a super-2 number, since 2×1061155601² = 2252102419067342402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1061155603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192455 + ... + 197891.

It is an arithmetic number, because the mean of its divisors is an integer number (97277663).

Almost surely, 2^1061155601 is an apocalyptic number.

1061155601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1061155601 is a deficient number, since it is larger than the sum of its proper divisors (106176355).

1061155601 is a wasteful number, since it uses less digits than its factorization.

1061155601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7072 (or 7061 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 1061155601 is about 32575.3833592177. The cubic root of 1061155601 is about 1019.9832116294.

The spelling of 1061155601 in words is "one billion, sixty-one million, one hundred fifty-five thousand, six hundred one".