651992055 has 32 divisors (see below), whose sum is σ = 1225566720. Its totient is φ = 291799680.

The previous prime is 651992027. The next prime is 651992057. The reversal of 651992055 is 550299156.

It is not a de Polignac number, because 651992055 - 2⁵ = 651992023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 651991998 and 651992016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651992057) 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, 149835 + ... + 154124.

It is an arithmetic number, because the mean of its divisors is an integer number (38298960).

Almost surely, 2^651992055 is an apocalyptic number.

651992055 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

651992055 is a deficient number, since it is larger than the sum of its proper divisors (573574665).

651992055 is a wasteful number, since it uses less digits than its factorization.

651992055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303991.

The product of its (nonzero) digits is 121500, while the sum is 42.

The square root of 651992055 is about 25534.1350940266. The cubic root of 651992055 is about 867.1231238665.

The spelling of 651992055 in words is "six hundred fifty-one million, nine hundred ninety-two thousand, fifty-five".