1052021554 has 4 divisors (see below), whose sum is σ = 1578032334. Its totient is φ = 526010776.

The previous prime is 1052021519. The next prime is 1052021561. The reversal of 1052021554 is 4551202501.

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

It can be written as a sum of positive squares in only one way, i.e., 1051510329 + 511225 = 32427^2 + 715^2 .

It is a super-2 number, since 2×1052021554² = 2213498700161149832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263005387 + ... + 263005390.

Almost surely, 2^1052021554 is an apocalyptic number.

1052021554 is a deficient number, since it is larger than the sum of its proper divisors (526010780).

1052021554 is an equidigital number, since it uses as much as digits as its factorization.

1052021554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526010779.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 1052021554 is about 32434.8817478960. The cubic root of 1052021554 is about 1017.0482244017.

The spelling of 1052021554 in words is "one billion, fifty-two million, twenty-one thousand, five hundred fifty-four".