55401123 has 8 divisors (see below), whose sum is σ = 76251136. Its totient is φ = 35742600.

The previous prime is 55401121. The next prime is 55401149. The reversal of 55401123 is 32110455.

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

It is not a de Polignac number, because 55401123 - 2¹ = 55401121 is a prime.

It is a super-2 number, since 2×55401123² = 6138568859322258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55401123.

It is not an unprimeable number, because it can be changed into a prime (55401121) 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, 297763 + ... + 297948.

It is an arithmetic number, because the mean of its divisors is an integer number (9531392).

Almost surely, 2^55401123 is an apocalyptic number.

55401123 is a deficient number, since it is larger than the sum of its proper divisors (20850013).

55401123 is a wasteful number, since it uses less digits than its factorization.

55401123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595745.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 55401123 is about 7443.1930648076. The cubic root of 55401123 is about 381.2175237767.

Adding to 55401123 its reverse (32110455), we get a palindrome (87511578).

The spelling of 55401123 in words is "fifty-five million, four hundred one thousand, one hundred twenty-three".