55909470 has 16 divisors (see below), whose sum is σ = 134182800. Its totient is φ = 14909184.

The previous prime is 55909463. The next prime is 55909471. The reversal of 55909470 is 7490955.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55909471) 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, 931795 + ... + 931854.

It is an arithmetic number, because the mean of its divisors is an integer number (8386425).

Almost surely, 2^55909470 is an apocalyptic number.

55909470 is an abundant number, since it is smaller than the sum of its proper divisors (78273330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55909470 is a wasteful number, since it uses less digits than its factorization.

55909470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863659.

The product of its (nonzero) digits is 56700, while the sum is 39.

The square root of 55909470 is about 7477.2635368830. The cubic root of 55909470 is about 382.3799614783.

The spelling of 55909470 in words is "fifty-five million, nine hundred nine thousand, four hundred seventy".