16961155 has 16 divisors (see below), whose sum is σ = 21648384. Its totient is φ = 12712960.

The previous prime is 16961149. The next prime is 16961159. The reversal of 16961155 is 55116961.

It is not a de Polignac number, because 16961155 - 2¹³ = 16952963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16961155.

It is not an unprimeable number, because it can be changed into a prime (16961159) 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, 32295 + ... + 32815.

It is an arithmetic number, because the mean of its divisors is an integer number (1353024).

Almost surely, 2^16961155 is an apocalyptic number.

16961155 is the 2605-th heptagonal number.

16961155 is a deficient number, since it is larger than the sum of its proper divisors (4687229).

16961155 is a wasteful number, since it uses less digits than its factorization.

16961155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926.

The product of its digits is 8100, while the sum is 34.

The square root of 16961155 is about 4118.3922834038. The cubic root of 16961155 is about 256.9321637590.

The spelling of 16961155 in words is "sixteen million, nine hundred sixty-one thousand, one hundred fifty-five".