1051553745 has 80 divisors (see below), whose sum is σ = 2068716672. Its totient is φ = 506787840.

The previous prime is 1051553731. The next prime is 1051553791. The reversal of 1051553745 is 5473551501.

It is a happy number.

1051553745 is a `hidden beast` number, since 10 + 51 + 553 + 7 + 45 = 666.

It is not a de Polignac number, because 1051553745 - 2⁶ = 1051553681 is a prime.

It is a super-2 number, since 2×1051553745² = 2211530557247050050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 859204 + ... + 860426.

Almost surely, 2^1051553745 is an apocalyptic number.

1051553745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1051553745 is a deficient number, since it is larger than the sum of its proper divisors (1017162927).

1051553745 is a wasteful number, since it uses less digits than its factorization.

1051553745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444 (or 1435 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 36.

The square root of 1051553745 is about 32427.6694352215. The cubic root of 1051553745 is about 1016.8974496538.

It can be divided in two parts, 105155 and 3745, that added together give a square (108900 = 330²).

The spelling of 1051553745 in words is "one billion, fifty-one million, five hundred fifty-three thousand, seven hundred forty-five".