55601555 has 8 divisors (see below), whose sum is σ = 69022800. Its totient is φ = 42947296.

The previous prime is 55601551. The next prime is 55601573. The reversal of 55601555 is 55510655.

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

It is a cyclic number.

It is not a de Polignac number, because 55601555 - 2² = 55601551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55601551) 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, 191585 + ... + 191874.

It is an arithmetic number, because the mean of its divisors is an integer number (8627850).

Almost surely, 2^55601555 is an apocalyptic number.

55601555 is a deficient number, since it is larger than the sum of its proper divisors (13421245).

55601555 is a wasteful number, since it uses less digits than its factorization.

55601555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383493.

The product of its (nonzero) digits is 18750, while the sum is 32.

The square root of 55601555 is about 7456.6450230650. The cubic root of 55601555 is about 381.6766975703.

The spelling of 55601555 in words is "fifty-five million, six hundred one thousand, five hundred fifty-five".