961215355 has 4 divisors (see below), whose sum is σ = 1153458432. Its totient is φ = 768972280.

The previous prime is 961215337. The next prime is 961215371. The reversal of 961215355 is 553512169.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 961215355 - 2⁵ = 961215323 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96121531 + ... + 96121540.

It is an arithmetic number, because the mean of its divisors is an integer number (288364608).

Almost surely, 2^961215355 is an apocalyptic number.

961215355 is a deficient number, since it is larger than the sum of its proper divisors (192243077).

961215355 is a wasteful number, since it uses less digits than its factorization.

961215355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192243076.

The product of its digits is 40500, while the sum is 37.

The square root of 961215355 is about 31003.4732731673. The cubic root of 961215355 is about 986.9009490654.

The spelling of 961215355 in words is "nine hundred sixty-one million, two hundred fifteen thousand, three hundred fifty-five".