1153551061 has 16 divisors (see below), whose sum is σ = 1257222400. Its totient is φ = 1052092800.

The previous prime is 1153551059. The next prime is 1153551101. The reversal of 1153551061 is 1601553511.

1153551061 = 324² + 325² + ... + 1517².

It is a cyclic number.

It is not a de Polignac number, because 1153551061 - 2¹ = 1153551059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153551041) 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, 389161 + ... + 392113.

It is an arithmetic number, because the mean of its divisors is an integer number (78576400).

Almost surely, 2^1153551061 is an apocalyptic number.

It is an amenable number.

1153551061 is a deficient number, since it is larger than the sum of its proper divisors (103671339).

1153551061 is a wasteful number, since it uses less digits than its factorization.

1153551061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3316.

The product of its (nonzero) digits is 2250, while the sum is 28.

The square root of 1153551061 is about 33963.9670974991. The cubic root of 1153551061 is about 1048.7668246721.

The spelling of 1153551061 in words is "one billion, one hundred fifty-three million, five hundred fifty-one thousand, sixty-one".