55209465 has 16 divisors (see below), whose sum is σ = 98150400. Its totient is φ = 29444976.

The previous prime is 55209461. The next prime is 55209467. The reversal of 55209465 is 56490255.

It is not a de Polignac number, because 55209465 - 2² = 55209461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55209461) 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, 204345 + ... + 204614.

It is an arithmetic number, because the mean of its divisors is an integer number (6134400).

Almost surely, 2^55209465 is an apocalyptic number.

It is an amenable number.

55209465 is a deficient number, since it is larger than the sum of its proper divisors (42940935).

55209465 is a wasteful number, since it uses less digits than its factorization.

55209465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408973 (or 408967 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 55209465 is about 7430.3071941879. The cubic root of 55209465 is about 380.7774135417. Note that the first 3 decimals are identical.

The spelling of 55209465 in words is "fifty-five million, two hundred nine thousand, four hundred sixty-five".