55401549 has 32 divisors (see below), whose sum is σ = 92743680. Its totient is φ = 28683072.

The previous prime is 55401547. The next prime is 55401553. The reversal of 55401549 is 94510455.

It is not a de Polignac number, because 55401549 - 2¹ = 55401547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55401547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6159 + ... + 12195.

It is an arithmetic number, because the mean of its divisors is an integer number (2898240).

Almost surely, 2^55401549 is an apocalyptic number.

It is an amenable number.

55401549 is a deficient number, since it is larger than the sum of its proper divisors (37342131).

55401549 is a wasteful number, since it uses less digits than its factorization.

55401549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6089.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 55401549 is about 7443.2216815032. The cubic root of 55401549 is about 381.2185008823.

The spelling of 55401549 in words is "fifty-five million, four hundred one thousand, five hundred forty-nine".