55137930 has 16 divisors (see below), whose sum is σ = 132331104. Its totient is φ = 14703440.

The previous prime is 55137917. The next prime is 55137937. The reversal of 55137930 is 3973155.

It is a junction number, because it is equal to n+sod(n) for n = 55137891 and 55137900.

It is not an unprimeable number, because it can be changed into a prime (55137937) 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, 918936 + ... + 918995.

It is an arithmetic number, because the mean of its divisors is an integer number (8270694).

Almost surely, 2^55137930 is an apocalyptic number.

55137930 is an abundant number, since it is smaller than the sum of its proper divisors (77193174).

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

55137930 is a wasteful number, since it uses less digits than its factorization.

55137930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837941.

The product of its (nonzero) digits is 14175, while the sum is 33.

The square root of 55137930 is about 7425.4919028977. The cubic root of 55137930 is about 380.6128844750.

The spelling of 55137930 in words is "fifty-five million, one hundred thirty-seven thousand, nine hundred thirty".