557478405 has 24 divisors (see below), whose sum is σ = 1054141920. Its totient is φ = 270292320.

The previous prime is 557478403. The next prime is 557478469. The reversal of 557478405 is 504874755.

557478405 is a `hidden beast` number, since 5 + 574 + 78 + 4 + 0 + 5 = 666.

It is not a de Polignac number, because 557478405 - 2¹ = 557478403 is a prime.

It is a super-3 number, since 3×557478405³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557478403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 562615 + ... + 563604.

It is an arithmetic number, because the mean of its divisors is an integer number (43922580).

Almost surely, 2^557478405 is an apocalyptic number.

557478405 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

557478405 is a deficient number, since it is larger than the sum of its proper divisors (496663515).

557478405 is a wasteful number, since it uses less digits than its factorization.

557478405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126241 (or 1126238 counting only the distinct ones).

The product of its (nonzero) digits is 784000, while the sum is 45.

The square root of 557478405 is about 23610.9806022537. The cubic root of 557478405 is about 823.0180302322.

The spelling of 557478405 in words is "five hundred fifty-seven million, four hundred seventy-eight thousand, four hundred five".