961551101 has 4 divisors (see below), whose sum is σ = 1098915552. Its totient is φ = 824186652.

The previous prime is 961551047. The next prime is 961551119. The reversal of 961551101 is 101155169.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 961551101 - 2⁶ = 961551037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961551121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68682215 + ... + 68682228.

It is an arithmetic number, because the mean of its divisors is an integer number (274728888).

Almost surely, 2^961551101 is an apocalyptic number.

It is an amenable number.

961551101 is a deficient number, since it is larger than the sum of its proper divisors (137364451).

961551101 is a wasteful number, since it uses less digits than its factorization.

961551101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137364450.

The product of its (nonzero) digits is 1350, while the sum is 29.

The square root of 961551101 is about 31008.8874518258. The cubic root of 961551101 is about 987.0158416240.

The spelling of 961551101 in words is "nine hundred sixty-one million, five hundred fifty-one thousand, one hundred one".