55040461 has 4 divisors (see below), whose sum is σ = 62903392. Its totient is φ = 47177532.

The previous prime is 55040459. The next prime is 55040501. The reversal of 55040461 is 16404055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16404055 = 5 ⋅3280811.

It is a cyclic number.

It is not a de Polignac number, because 55040461 - 2¹ = 55040459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55040411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3931455 + ... + 3931468.

It is an arithmetic number, because the mean of its divisors is an integer number (15725848).

Almost surely, 2^55040461 is an apocalyptic number.

It is an amenable number.

55040461 is a deficient number, since it is larger than the sum of its proper divisors (7862931).

55040461 is an equidigital number, since it uses as much as digits as its factorization.

55040461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7862930.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 55040461 is about 7418.9258656493. The cubic root of 55040461 is about 380.3884785264.

The spelling of 55040461 in words is "fifty-five million, forty thousand, four hundred sixty-one".