55472691 has 8 divisors (see below), whose sum is σ = 74014720. Its totient is φ = 36956232.

The previous prime is 55472687. The next prime is 55472693. The reversal of 55472691 is 19627455.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55472691 - 2² = 55472687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55472693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571 + ... + 10548.

It is an arithmetic number, because the mean of its divisors is an integer number (9251840).

Almost surely, 2^55472691 is an apocalyptic number.

55472691 is a deficient number, since it is larger than the sum of its proper divisors (18542029).

55472691 is a wasteful number, since it uses less digits than its factorization.

55472691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12785.

The product of its digits is 75600, while the sum is 39.

The square root of 55472691 is about 7447.9991272824. Note that the first 3 decimals coincide. The cubic root of 55472691 is about 381.3816073097.

The spelling of 55472691 in words is "fifty-five million, four hundred seventy-two thousand, six hundred ninety-one".