51379230 has 128 divisors (see below), whose sum is σ = 151142400. Its totient is φ = 10917504.

The previous prime is 51379201. The next prime is 51379231. The reversal of 51379230 is 3297315.

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 (51379231) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 315129 + ... + 315291.

It is an arithmetic number, because the mean of its divisors is an integer number (1180800).

Almost surely, 2^51379230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51379230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75571200).

51379230 is an abundant number, since it is smaller than the sum of its proper divisors (99763170).

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

51379230 is a wasteful number, since it uses less digits than its factorization.

51379230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278.

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 51379230 is about 7167.9306637272. The cubic root of 51379230 is about 371.7598895659.

The spelling of 51379230 in words is "fifty-one million, three hundred seventy-nine thousand, two hundred thirty".