1055512621 has 16 divisors (see below), whose sum is σ = 1085036544. Its totient is φ = 1026514944.

The previous prime is 1055512613. The next prime is 1055512631. The reversal of 1055512621 is 1262155501.

It is a cyclic number.

It is not a de Polignac number, because 1055512621 - 2³ = 1055512613 is a prime.

It is a super-2 number, since 2×1055512621² = 2228213786180579282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1055512621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055512631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2382426 + ... + 2382868.

It is an arithmetic number, because the mean of its divisors is an integer number (67814784).

Almost surely, 2^1055512621 is an apocalyptic number.

It is an amenable number.

1055512621 is a deficient number, since it is larger than the sum of its proper divisors (29523923).

1055512621 is a wasteful number, since it uses less digits than its factorization.

1055512621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 1055512621 is about 32488.6537271091. The cubic root of 1055512621 is about 1018.1719856790.

The spelling of 1055512621 in words is "one billion, fifty-five million, five hundred twelve thousand, six hundred twenty-one".