1521122051 has 4 divisors (see below), whose sum is σ = 1538213400. Its totient is φ = 1504030704.

The previous prime is 1521122023. The next prime is 1521122069. The reversal of 1521122051 is 1502211251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1502211251 = 8693 ⋅172807.

It is a cyclic number.

It is not a de Polignac number, because 1521122051 - 2¹⁰ = 1521121027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1521122021) 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, 8545541 + ... + 8545718.

It is an arithmetic number, because the mean of its divisors is an integer number (384553350).

Almost surely, 2^1521122051 is an apocalyptic number.

1521122051 is a deficient number, since it is larger than the sum of its proper divisors (17091349).

1521122051 is an equidigital number, since it uses as much as digits as its factorization.

1521122051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17091348.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 1521122051 is about 39001.5647250210. The cubic root of 1521122051 is about 1150.0622653117.

The spelling of 1521122051 in words is "one billion, five hundred twenty-one million, one hundred twenty-two thousand, fifty-one".