51379407 has 32 divisors (see below), whose sum is σ = 78140160. Its totient is φ = 33357600.

The previous prime is 51379399. The next prime is 51379409. The reversal of 51379407 is 70497315.

It is a happy number.

It is not a de Polignac number, because 51379407 - 2³ = 51379399 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51379409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 226228 + ... + 226454.

It is an arithmetic number, because the mean of its divisors is an integer number (2441880).

Almost surely, 2^51379407 is an apocalyptic number.

51379407 is a deficient number, since it is larger than the sum of its proper divisors (26760753).

51379407 is a wasteful number, since it uses less digits than its factorization.

51379407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 51379407 is about 7167.9430103761. The cubic root of 51379407 is about 371.7603164662.

The spelling of 51379407 in words is "fifty-one million, three hundred seventy-nine thousand, four hundred seven".