1043553551 has 4 divisors (see below), whose sum is σ = 1104939072. Its totient is φ = 982168032.

The previous prime is 1043553503. The next prime is 1043553557. The reversal of 1043553551 is 1553553401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1043553551 - 2²² = 1039359247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1043553557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30692735 + ... + 30692768.

It is an arithmetic number, because the mean of its divisors is an integer number (276234768).

Almost surely, 2^1043553551 is an apocalyptic number.

1043553551 is a deficient number, since it is larger than the sum of its proper divisors (61385521).

1043553551 is an equidigital number, since it uses as much as digits as its factorization.

1043553551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61385520.

The product of its (nonzero) digits is 22500, while the sum is 32.

The square root of 1043553551 is about 32304.0794792237. The cubic root of 1043553551 is about 1014.3120386826.

The spelling of 1043553551 in words is "one billion, forty-three million, five hundred fifty-three thousand, five hundred fifty-one".