1051251601 has 2 divisors, whose sum is σ = 1051251602. Its totient is φ = 1051251600.

The previous prime is 1051251587. The next prime is 1051251623. The reversal of 1051251601 is 1061521501.

It is a happy number.

It is an a-pointer prime, because the next prime (1051251623) can be obtained adding 1051251601 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 851764225 + 199487376 = 29185^2 + 14124^2 .

It is a cyclic number.

It is not a de Polignac number, because 1051251601 - 2¹³ = 1051243409 is a prime.

It is a super-2 number, since 2×1051251601² = 2210259857210126402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1051251671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525625800 + 525625801.

It is an arithmetic number, because the mean of its divisors is an integer number (525625801).

Almost surely, 2^1051251601 is an apocalyptic number.

It is an amenable number.

1051251601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051251601 is an equidigital number, since it uses as much as digits as its factorization.

1051251601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 22.

The square root of 1051251601 is about 32423.0103630123. The cubic root of 1051251601 is about 1016.8000449335.

The spelling of 1051251601 in words is "one billion, fifty-one million, two hundred fifty-one thousand, six hundred one".