155464562251 has 4 divisors (see below), whose sum is σ = 156149428392. Its totient is φ = 154779696112.

The previous prime is 155464562243. The next prime is 155464562257. The reversal of 155464562251 is 152265464551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 152265464551 = 295949 ⋅514499.

It is a cyclic number.

It is not a de Polignac number, because 155464562251 - 2³ = 155464562243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155464562257) 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, 342432730 + ... + 342433183.

It is an arithmetic number, because the mean of its divisors is an integer number (39037357098).

Almost surely, 2^155464562251 is an apocalyptic number.

155464562251 is a deficient number, since it is larger than the sum of its proper divisors (684866141).

155464562251 is an equidigital number, since it uses as much as digits as its factorization.

155464562251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684866140.

The product of its digits is 1440000, while the sum is 46.

The spelling of 155464562251 in words is "one hundred fifty-five billion, four hundred sixty-four million, five hundred sixty-two thousand, two hundred fifty-one".