55557501 has 16 divisors (see below), whose sum is σ = 79880640. Its totient is φ = 34231680.

The previous prime is 55557499. The next prime is 55557511. The reversal of 55557501 is 10575555.

It is not a de Polignac number, because 55557501 - 2¹ = 55557499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55557511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9550 + ... + 14223.

It is an arithmetic number, because the mean of its divisors is an integer number (4992540).

Almost surely, 2^55557501 is an apocalyptic number.

It is an amenable number.

55557501 is a deficient number, since it is larger than the sum of its proper divisors (24323139).

55557501 is a wasteful number, since it uses less digits than its factorization.

55557501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23836.

The product of its (nonzero) digits is 21875, while the sum is 33.

The square root of 55557501 is about 7453.6904282375. The cubic root of 55557501 is about 381.5758680884.

The spelling of 55557501 in words is "fifty-five million, five hundred fifty-seven thousand, five hundred one".