15502220051 has 2 divisors, whose sum is σ = 15502220052. Its totient is φ = 15502220050.

The previous prime is 15502220047. The next prime is 15502220081. The reversal of 15502220051 is 15002220551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15502220051 - 2² = 15502220047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15502219999 and 15502220026.

It is not a weakly prime, because it can be changed into another prime (15502220011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7751110025 + 7751110026.

It is an arithmetic number, because the mean of its divisors is an integer number (7751110026).

Almost surely, 2^15502220051 is an apocalyptic number.

15502220051 is a deficient number, since it is larger than the sum of its proper divisors (1).

15502220051 is an equidigital number, since it uses as much as digits as its factorization.

15502220051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1000, while the sum is 23.

The spelling of 15502220051 in words is "fifteen billion, five hundred two million, two hundred twenty thousand, fifty-one".