55406995 has 48 divisors (see below), whose sum is σ = 83770848. Its totient is φ = 34944000.

The previous prime is 55406993. The next prime is 55407017. The reversal of 55406995 is 59960455.

It is not a de Polignac number, because 55406995 - 2¹ = 55406993 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (55406993) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 220620 + ... + 220870.

It is an arithmetic number, because the mean of its divisors is an integer number (1745226).

Almost surely, 2^55406995 is an apocalyptic number.

55406995 is a deficient number, since it is larger than the sum of its proper divisors (28363853).

55406995 is a wasteful number, since it uses less digits than its factorization.

55406995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 333 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 43.

The square root of 55406995 is about 7443.5875087219. The cubic root of 55406995 is about 381.2309917962.

The spelling of 55406995 in words is "fifty-five million, four hundred six thousand, nine hundred ninety-five".