55420462147 has 4 divisors (see below), whose sum is σ = 55969179696. Its totient is φ = 54871744600.

The previous prime is 55420462127. The next prime is 55420462157. The reversal of 55420462147 is 74126402455.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-55420462147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55420462127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274358623 + ... + 274358824.

It is an arithmetic number, because the mean of its divisors is an integer number (13992294924).

Almost surely, 2^55420462147 is an apocalyptic number.

55420462147 is a deficient number, since it is larger than the sum of its proper divisors (548717549).

55420462147 is a wasteful number, since it uses less digits than its factorization.

55420462147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548717548.

The product of its (nonzero) digits is 268800, while the sum is 40.

The spelling of 55420462147 in words is "fifty-five billion, four hundred twenty million, four hundred sixty-two thousand, one hundred forty-seven".