55807630 has 16 divisors (see below), whose sum is σ = 100590624. Its totient is φ = 22292640.

The previous prime is 55807613. The next prime is 55807639. The reversal of 55807630 is 3670855.

It is a happy number.

It is a super-2 number, since 2×55807630² = 6228983132433800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55807639) 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, 4840 + ... + 11620.

It is an arithmetic number, because the mean of its divisors is an integer number (6286914).

Almost surely, 2^55807630 is an apocalyptic number.

55807630 is a deficient number, since it is larger than the sum of its proper divisors (44782994).

55807630 is a wasteful number, since it uses less digits than its factorization.

55807630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7611.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 55807630 is about 7470.4504549592. The cubic root of 55807630 is about 382.1476499488.

The spelling of 55807630 in words is "fifty-five million, eight hundred seven thousand, six hundred thirty".