1551020053 has 8 divisors (see below), whose sum is σ = 1693776096. Its totient is φ = 1408556400.

The previous prime is 1551020017. The next prime is 1551020071. The reversal of 1551020053 is 3500201551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1551020053 - 2⁹ = 1551019541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1551020083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61926 + ... + 83287.

It is an arithmetic number, because the mean of its divisors is an integer number (211722012).

Almost surely, 2^1551020053 is an apocalyptic number.

It is an amenable number.

1551020053 is a deficient number, since it is larger than the sum of its proper divisors (142756043).

1551020053 is a wasteful number, since it uses less digits than its factorization.

1551020053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146195.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 1551020053 is about 39382.9919254492. The cubic root of 1551020053 is about 1157.5483429375.

The spelling of 1551020053 in words is "one billion, five hundred fifty-one million, twenty thousand, fifty-three".