55511670 has 32 divisors (see below), whose sum is σ = 135745632. Its totient is φ = 14523392.

The previous prime is 55511657. The next prime is 55511671. The reversal of 55511670 is 7611555.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55511671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15867 + ... + 19046.

It is an arithmetic number, because the mean of its divisors is an integer number (4242051).

Almost surely, 2^55511670 is an apocalyptic number.

55511670 is an abundant number, since it is smaller than the sum of its proper divisors (80233962).

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

55511670 is a wasteful number, since it uses less digits than its factorization.

55511670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34976.

The product of its (nonzero) digits is 5250, while the sum is 30.

The square root of 55511670 is about 7450.6154108235. The cubic root of 55511670 is about 381.4709148760.

The spelling of 55511670 in words is "fifty-five million, five hundred eleven thousand, six hundred seventy".