55557455 has 4 divisors (see below), whose sum is σ = 66668952. Its totient is φ = 44445960.

The previous prime is 55557427. The next prime is 55557499. The reversal of 55557455 is 55475555.

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-55557455 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5555741 + ... + 5555750.

It is an arithmetic number, because the mean of its divisors is an integer number (16667238).

Almost surely, 2^55557455 is an apocalyptic number.

55557455 is a deficient number, since it is larger than the sum of its proper divisors (11111497).

55557455 is a wasteful number, since it uses less digits than its factorization.

55557455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11111496.

The product of its digits is 437500, while the sum is 41.

The square root of 55557455 is about 7453.6873425171. The cubic root of 55557455 is about 381.5757627771.

The spelling of 55557455 in words is "fifty-five million, five hundred fifty-seven thousand, four hundred fifty-five".