551653957 has 2 divisors, whose sum is σ = 551653958. Its totient is φ = 551653956.

The previous prime is 551653943. The next prime is 551653967. The reversal of 551653957 is 759356155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 305760196 + 245893761 = 17486^2 + 15681^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551653957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551653967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275826978 + 275826979.

It is an arithmetic number, because the mean of its divisors is an integer number (275826979).

Almost surely, 2^551653957 is an apocalyptic number.

It is an amenable number.

551653957 is a deficient number, since it is larger than the sum of its proper divisors (1).

551653957 is an equidigital number, since it uses as much as digits as its factorization.

551653957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 708750, while the sum is 46.

The square root of 551653957 is about 23487.3148103396. The cubic root of 551653957 is about 820.1417348695.

The spelling of 551653957 in words is "five hundred fifty-one million, six hundred fifty-three thousand, nine hundred fifty-seven".