51049219 has 32 divisors (see below), whose sum is σ = 61286400. Its totient is φ = 42094080.

The previous prime is 51049211. The next prime is 51049237. The reversal of 51049219 is 91294015.

It is a cyclic number.

It is not a de Polignac number, because 51049219 - 2³ = 51049211 is a prime.

It is a super-2 number, since 2×51049219² = 5212045521019922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (51049211) 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, 451707 + ... + 451819.

It is an arithmetic number, because the mean of its divisors is an integer number (1915200).

Almost surely, 2^51049219 is an apocalyptic number.

51049219 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

51049219 is a deficient number, since it is larger than the sum of its proper divisors (10237181).

51049219 is a wasteful number, since it uses less digits than its factorization.

51049219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 51049219 is about 7144.8736167969. The cubic root of 51049219 is about 370.9622360895.

It can be divided in two parts, 510 and 49219, that added together give a square (49729 = 223²).

The spelling of 51049219 in words is "fifty-one million, forty-nine thousand, two hundred nineteen".