155462421 has 8 divisors (see below), whose sum is σ = 207806944. Its totient is φ = 103379760.

The previous prime is 155462413. The next prime is 155462431. The reversal of 155462421 is 124264551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155462421 - 2³ = 155462413 is a prime.

It is a super-3 number, since 3×155462421³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155462431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64075 + ... + 66456.

It is an arithmetic number, because the mean of its divisors is an integer number (25975868).

Almost surely, 2^155462421 is an apocalyptic number.

It is an amenable number.

155462421 is a deficient number, since it is larger than the sum of its proper divisors (52344523).

155462421 is a wasteful number, since it uses less digits than its factorization.

155462421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130931.

The product of its digits is 9600, while the sum is 30.

The square root of 155462421 is about 12468.4570416712. The cubic root of 155462421 is about 537.7021944184.

The spelling of 155462421 in words is "one hundred fifty-five million, four hundred sixty-two thousand, four hundred twenty-one".