7554802921 has 2 divisors, whose sum is σ = 7554802922. Its totient is φ = 7554802920.

The previous prime is 7554802909. The next prime is 7554802949. The reversal of 7554802921 is 1292084557.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6020984025 + 1533818896 = 77595^2 + 39164^2 .

It is a cyclic number.

It is not a de Polignac number, because 7554802921 - 2⁷ = 7554802793 is a prime.

It is not a weakly prime, because it can be changed into another prime (7554802901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3777401460 + 3777401461.

It is an arithmetic number, because the mean of its divisors is an integer number (3777401461).

Almost surely, 2^7554802921 is an apocalyptic number.

It is an amenable number.

7554802921 is a deficient number, since it is larger than the sum of its proper divisors (1).

7554802921 is an equidigital number, since it uses as much as digits as its factorization.

7554802921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 7554802921 is about 86918.3692955638. The cubic root of 7554802921 is about 1962.1899478319.

The spelling of 7554802921 in words is "seven billion, five hundred fifty-four million, eight hundred two thousand, nine hundred twenty-one".