161054455 has 16 divisors (see below), whose sum is σ = 199934208. Its totient is φ = 124416000.

The previous prime is 161054449. The next prime is 161054459. The reversal of 161054455 is 554450161.

It is not a de Polignac number, because 161054455 - 2⁵ = 161054423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161054459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98545 + ... + 100165.

It is an arithmetic number, because the mean of its divisors is an integer number (12495888).

Almost surely, 2^161054455 is an apocalyptic number.

161054455 is a deficient number, since it is larger than the sum of its proper divisors (38879753).

161054455 is a wasteful number, since it uses less digits than its factorization.

161054455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2298.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 161054455 is about 12690.7231866431. The cubic root of 161054455 is about 544.0735093409.

It can be divided in two parts, 1610 and 54455, that added together give a palindrome (56065).

The spelling of 161054455 in words is "one hundred sixty-one million, fifty-four thousand, four hundred fifty-five".