155224401473 has 2 divisors, whose sum is σ = 155224401474. Its totient is φ = 155224401472.

The previous prime is 155224401457. The next prime is 155224401523. The reversal of 155224401473 is 374104422551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106369256449 + 48855145024 = 326143^2 + 221032^2 .

It is a cyclic number.

It is not a de Polignac number, because 155224401473 - 2⁴ = 155224401457 is a prime.

It is a super-2 number, since 2×155224401473² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (155224481473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77612200736 + 77612200737.

It is an arithmetic number, because the mean of its divisors is an integer number (77612200737).

Almost surely, 2^155224401473 is an apocalyptic number.

It is an amenable number.

155224401473 is a deficient number, since it is larger than the sum of its proper divisors (1).

155224401473 is an equidigital number, since it uses as much as digits as its factorization.

155224401473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134400, while the sum is 38.

The spelling of 155224401473 in words is "one hundred fifty-five billion, two hundred twenty-four million, four hundred one thousand, four hundred seventy-three".