1201520051 has 2 divisors, whose sum is σ = 1201520052. Its totient is φ = 1201520050.

The previous prime is 1201520027. The next prime is 1201520059. The reversal of 1201520051 is 1500251021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1201520051 - 2⁶ = 1201519987 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201520059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600760025 + 600760026.

It is an arithmetic number, because the mean of its divisors is an integer number (600760026).

Almost surely, 2^1201520051 is an apocalyptic number.

1201520051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201520051 is an equidigital number, since it uses as much as digits as its factorization.

1201520051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 1201520051 is about 34662.9492542109. The cubic root of 1201520051 is about 1063.1070729781.

Adding to 1201520051 its reverse (1500251021), we get a palindrome (2701771072).

The spelling of 1201520051 in words is "one billion, two hundred one million, five hundred twenty thousand, fifty-one".