55353961 has 16 divisors (see below), whose sum is σ = 61697104. Its totient is φ = 49330944.

The previous prime is 55353917. The next prime is 55353967. The reversal of 55353961 is 16935355.

55353961 is nontrivially palindromic in base 12.

It can be written as a sum of positive squares in 8 ways, for example, as 3240000 + 52113961 = 1800^2 + 7219^2 .

It is not a de Polignac number, because 55353961 - 2¹⁵ = 55321193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

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 55353961.

It is not an unprimeable number, because it can be changed into a prime (55353967) 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, 75151 + ... + 75883.

It is an arithmetic number, because the mean of its divisors is an integer number (3856069).

Almost surely, 2^55353961 is an apocalyptic number.

55353961 is the 4296-th hex number.

It is an amenable number.

55353961 is a deficient number, since it is larger than the sum of its proper divisors (6343143).

55353961 is a wasteful number, since it uses less digits than its factorization.

55353961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940.

The product of its digits is 60750, while the sum is 37.

The square root of 55353961 is about 7440.0242607131. The cubic root of 55353961 is about 381.1093184791.

The spelling of 55353961 in words is "fifty-five million, three hundred fifty-three thousand, nine hundred sixty-one".