55535861001 has 24 divisors (see below), whose sum is σ = 78750559360. Its totient is φ = 34805820672.

The previous prime is 55535860957. The next prime is 55535861027. The reversal of 55535861001 is 10016853555.

It is not a de Polignac number, because 55535861001 - 2¹³ = 55535852809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55535861041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 723840 + ... + 796878.

Almost surely, 2^55535861001 is an apocalyptic number.

55535861001 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

55535861001 is a deficient number, since it is larger than the sum of its proper divisors (23214698359).

55535861001 is a wasteful number, since it uses less digits than its factorization.

55535861001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73953 (or 73936 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 39.

The spelling of 55535861001 in words is "fifty-five billion, five hundred thirty-five million, eight hundred sixty-one thousand, one".